Index: .github/workflows/rust-clippy.yml
==================================================================
--- .github/workflows/rust-clippy.yml	
+++ .github/workflows/rust-clippy.yml	
@@ -21,11 +21,11 @@
       - uses: actions/checkout@v7
         with:
           persist-credentials: false
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
-      - uses: mozilla-actions/sccache-action@v0.0.10
+      - uses: mozilla-actions/sccache-action@v0.0.11
 
       # TESTS
       - name: Run tests
         run: cargo test --all-targets --all-features
 

Index: Cargo.lock
==================================================================
--- Cargo.lock	
+++ Cargo.lock	
@@ -2,13 +2,13 @@
 # It is not intended for manual editing.
 version = 4
 
 [[package]]
 name = "aho-corasick"
-version = "1.1.4"
+version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
+checksum = "c982642fa9e8606056828ee9a8505737230110bb1099153c79efe865c59d12ba"
 dependencies = [
  "memchr",
 ]
 
 [[package]]
@@ -227,23 +227,23 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f2032f911046de80f0a198e0901378627c33f59ea0ac00e363d481118bd70a53"
 
 [[package]]
 name = "aws-lc-rs"
-version = "1.17.3"
+version = "1.18.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00bdb5da18dac48ca2cc7cd4a98e533e8635a58e2361d13a1a4ee3888e0d72f1"
+checksum = "b281d307588d634de920874890732659e2e7672f72b5e10e81badc1a8a83621e"
 dependencies = [
  "aws-lc-sys",
  "zeroize",
 ]
 
 [[package]]
 name = "aws-lc-sys"
-version = "0.43.0"
+version = "0.45.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43103168cc76fe62678a375e722fc9cb3a0146159ac5828bc4f0dfd755c2224c"
+checksum = "9bff6c3b54fad79a2e60b8102caf565819711497c1f5f092f49508e2f5c31b27"
 dependencies = [
  "cc",
  "cmake",
  "dunce",
  "fs_extra",
@@ -254,10 +254,16 @@
 name = "base64"
 version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
+[[package]]
+name = "base64"
+version = "0.23.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac07cdecf99051d9a5238b80f35af32cdeba5b336e55d957b318b50137e18da5"
+
 [[package]]
 name = "base64-compat"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5a8d4d2746f89841e49230dd26917df1876050f95abafafbe34f47cb534b88d7"
@@ -271,13 +277,13 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b588b76d00fde79687d7646a9b5bdf3cc0f655e0bbd080335a95d7e96f3587da"
 
 [[package]]
 name = "blocking"
-version = "1.6.2"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e83f8d02be6967315521be875afa792a316e28d57b5a2d401897e2a7921b7f21"
+checksum = "a70e4329df6cb94385eed412ec92375c3cdd8a6e502493d1229b6414e4036dfa"
 dependencies = [
  "async-channel",
  "async-task",
  "futures-io",
  "futures-lite",
@@ -308,13 +314,13 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fc652a48c352aef3ea3aed32080501cf3ef6ed5da78602a020c991775b0aff04"
 
 [[package]]
 name = "cc"
-version = "1.4.0"
+version = "1.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5add81bb678e6cb321aff7fa0dc7689ad82b112dbc032cea19f91d6b8e3582b9"
+checksum = "005ec2760ca554fae18df7a11195552ec576cd665632a881bc011d5bb2fd4d80"
 dependencies = [
  "find-msvc-tools",
  "jobserver",
  "libc",
  "shlex",
@@ -332,34 +338,34 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f079e83a288787bcd14a6aea84cee5c87a67c5a3e660c30f557a3d24761b3527"
 
 [[package]]
 name = "chacha20"
-version = "0.10.1"
+version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d524456ba66e72eb8b115ff89e01e497f8e6d11d78b70b1aa13c0fbd97540a81"
+checksum = "65c35e4b699c7e15ccbe7ee35c005e4fc0a278d22238a2857e6ce2dadeda1b06"
 dependencies = [
  "cfg-if",
  "cpufeatures",
  "rand_core",
 ]
 
 [[package]]
 name = "clap"
-version = "4.6.5"
+version = "4.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "301b56658598e48f3648647ac6fc887be7e7108eddfa4e9b63fcf3ec58c0cadf"
+checksum = "473c7e07f409a8d772161724aa8db6a765a2532a70f9667eeb7b49d3d02fbdca"
 dependencies = [
  "clap_builder",
  "clap_derive",
 ]
 
 [[package]]
 name = "clap_builder"
-version = "4.6.5"
+version = "4.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94a65403d1a1bd28f7dc68eb8506e8874808ee5eecb59298de588e2e1407a078"
+checksum = "7b48fea5a88e9ae728a2dcbedbfc0e730f7d60da42e1cb049a83c9fb8b789889"
 dependencies = [
  "anstream",
  "anstyle",
  "clap_lex",
  "strsim",
@@ -372,11 +378,11 @@
 checksum = "d012d2b9d65aca7f18f4d9878a045bc17899bba951561ba5ec3c2ba1eed9a061"
 dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 3.0.3",
+ "syn 3.0.5",
 ]
 
 [[package]]
 name = "clap_lex"
 version = "1.1.0"
@@ -398,13 +404,13 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1d07550c9036bf2ae0c684c4297d503f838287c83c53686d05370d0e139ae570"
 
 [[package]]
 name = "combine"
-version = "4.6.7"
+version = "4.6.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba5a308b75df32fe02788e748662718f03fde005016435c444eea572398219fd"
+checksum = "cfc320937d09e6de266b31b9afb480f197d7a861be86be7cb2ea7e5d1bfffc5e"
 dependencies = [
  "bytes",
  "memchr",
 ]
 
@@ -445,55 +451,55 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
 
 [[package]]
 name = "cpufeatures"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+checksum = "5ca28b0ae3115b884660db4118d803791fd6756b6e88f39c0f3f7859060d7566"
 dependencies = [
  "libc",
 ]
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.22"
+version = "0.8.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "61803da095bee82a81bb1a452ecc25d3b2f1416d1897eb86430c6159ef717c17"
+checksum = "a31eee39dddec8330830986fcd7625edb5a24ec90ea038215273bbc3adb08ac6"
 
 [[package]]
 name = "darling"
-version = "0.23.0"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25ae13da2f202d56bd7f91c25fba009e7717a1e4a1cc98a76d844b65ae912e9d"
+checksum = "ed17f5901b6630b993ca003def43f2f8ef4014fc13b047b57aad617ff32bc2ec"
 dependencies = [
  "darling_core",
  "darling_macro",
 ]
 
 [[package]]
 name = "darling_core"
-version = "0.23.0"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9865a50f7c335f53564bb694ef660825eb8610e0a53d3e11bf1b0d3df31e03b0"
+checksum = "6837e2cf7485aaae18f86181d2f0e9a7ed297a025e220aeabf63fdebd3a2ddff"
 dependencies = [
  "ident_case",
  "proc-macro2",
  "quote",
  "strsim",
- "syn 2.0.119",
+ "syn 3.0.5",
 ]
 
 [[package]]
 name = "darling_macro"
-version = "0.23.0"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac3984ec7bd6cfa798e62b4a642426a5be0e68f9401cfc2a01e3fa9ea2fcdb8d"
+checksum = "2ac7135c3ef02b2f7833bbeb1be5ba7f966dcde8a87c6b87f65a778d71a02785"
 dependencies = [
  "darling_core",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.5",
 ]
 
 [[package]]
 name = "derive_more"
 version = "2.1.1"
@@ -521,11 +527,11 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c6232dd377dcc64799954cbd3a9bb882e9cdc1308ccd87b1c098f1fb2eaf82a8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.3",
+ "syn 3.0.5",
 ]
 
 [[package]]
 name = "dunce"
 version = "1.0.5"
@@ -532,13 +538,13 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "92773504d58c093f6de2459af4af33faa518c13451eb8f2b5698ed3d36e7c813"
 
 [[package]]
 name = "either"
-version = "1.17.0"
+version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e5e8f6c15a24b9a3ee5efec809ccd006d3b30e8b3bb63c39af737c7f87daa1d"
+checksum = "252afb9ae5eaa683babdc6a068b3f5726eb19e05070c731f9b2a23a7c3e8ed34"
 
 [[package]]
 name = "equivalent"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -580,13 +586,13 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "da7c62ceae207dd37ea5b845da6a0696c799f85e97da1ab5b7910be3c1c80223"
 
 [[package]]
 name = "find-msvc-tools"
-version = "0.1.9"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5baebc0774151f905a1a2cc41989300b1e6fbb29aff0ceffa1064fdd3088d582"
+checksum = "3e0f1c7c3a72c66fd80abe965175f7523475c0489a87d3ff9d6e8c87d87a9d2d"
 
 [[package]]
 name = "form_urlencoded"
 version = "1.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -601,28 +607,28 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42703706b716c37f96a77aea830392ad231f44c9e9a67872fa5548707e11b11c"
 
 [[package]]
 name = "futures-channel"
-version = "0.3.33"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "262590f4fe6afeb0bc83be1daa64e52657fe185690a958af7f3ad0e92085c5ae"
+checksum = "b1f9e3d69d39e4862ffed03ed071a76f9a13ba1d9109d355b0f0aa6b15e393c4"
 dependencies = [
  "futures-core",
 ]
 
 [[package]]
 name = "futures-core"
-version = "0.3.33"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2cd50c473c80f6d7c3670a752354b8e569b1a7cbfdc0419ec88e5edad85e0dc7"
+checksum = "92d699e522242e69e3003b94ecc1f960f3a5e015aa7c5d7486e65ad01dd94f5e"
 
 [[package]]
 name = "futures-io"
-version = "0.3.33"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4577ecaa3c4f96589d473f679a71b596316f6641bc350038b962a5daf0085d7a"
+checksum = "53c0fa8157de1303bfffdaa1cc2a673bfffb60102f76b0ef4441659124373fed"
 
 [[package]]
 name = "futures-lite"
 version = "2.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -635,36 +641,36 @@
  "pin-project-lite",
 ]
 
 [[package]]
 name = "futures-macro"
-version = "0.3.33"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d6d3cde68c518367be28956066ddfef33813991b77a55005a69dae04bf3b10b"
+checksum = "9fb9654ba8355388abeb8dcb4fc62f511300867002afc858860463bdd9fe0c44"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.5",
 ]
 
 [[package]]
 name = "futures-sink"
-version = "0.3.33"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e34418ac499d6305c2fb5ad0ed2f6ac998c5f8ca209b4510f7f94242c647e307"
+checksum = "1944426bf7d03f1d14f708785e4b33efd750b36d48a157b836b3efc15ede8e1d"
 
 [[package]]
 name = "futures-task"
-version = "0.3.33"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b231ed28831efb4a61a08580c4bc233ec56bc009f4cd8f52da2c3cb97df0c109"
+checksum = "cd417de3d1d015fc3bfd2b1ea46dfc7bab72ef86f1cc7cc9c78e728b34a6d1fd"
 
 [[package]]
 name = "futures-util"
-version = "0.3.33"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a77a90a256fce34da66415271e30f94ee91c57b04b8a2c042d9cf3220179deaa"
+checksum = "0d50a92467f8ba5dd6e3ee5d4bd04d73ab2e4e1c44474a0674821dfce14b79bc"
 dependencies = [
  "futures-core",
  "futures-io",
  "futures-macro",
  "futures-sink",
@@ -725,13 +731,13 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
 [[package]]
 name = "hermit-abi"
-version = "0.5.2"
+version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc0fef456e4baa96da950455cd02c081ca953b141298e41db3fc7e36b1da849c"
+checksum = "e17592d60ebacc7d5e169f4663c5f84f9161cc90328abcfe8456f41e4dfcb284"
 
 [[package]]
 name = "hostname"
 version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -768,13 +774,13 @@
  "http",
 ]
 
 [[package]]
 name = "http-body-util"
-version = "0.1.4"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e9f41fd6a08e4d4ec69df65976da761afd5ad5e58a9d4acb46bd1c953a9e3ff2"
+checksum = "23169fe34a5fbcdd3f3862e78fb9b6fccd5f02a6dc6f732547005d45631ce71c"
 dependencies = [
  "bytes",
  "futures-core",
  "http",
  "http-body",
@@ -787,13 +793,13 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6dbf3de79e51f3d586ab4cb9d5c3e2c14aa28ed23d180cf89b4df0454a69cc87"
 
 [[package]]
 name = "hyper"
-version = "1.11.0"
+version = "1.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d22053281f852e11534f5198498373cbb59295120a20771d90f7ed1897490a72"
+checksum = "27b501faa50e7a26c3d3560ca625132f4078a17771f4810baf70475ae48cbe43"
 dependencies = [
  "atomic-waker",
  "bytes",
  "futures-channel",
  "futures-core",
@@ -826,11 +832,11 @@
 name = "hyper-util"
 version = "0.1.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "96547c2556ec9d12fb1578c4eaf448b04993e7fb79cbaad930a656880a6bdfa0"
 dependencies = [
- "base64",
+ "base64 0.22.1",
  "bytes",
  "futures-channel",
  "futures-util",
  "http",
  "http-body",
@@ -845,13 +851,13 @@
  "tracing",
 ]
 
 [[package]]
 name = "icu_collections"
-version = "2.2.0"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2984d1cd16c883d7935b9e07e44071dca8d917fd52ecc02c04d5fa0b5a3f191c"
+checksum = "fa68d21081c4a05d5a901a1c62add574c77048b6a1c67be3b50ce0b60d4ca513"
 dependencies = [
  "displaydoc",
  "potential_utf",
  "utf8_iter",
  "yoke",
@@ -859,13 +865,13 @@
  "zerovec",
 ]
 
 [[package]]
 name = "icu_locale_core"
-version = "2.2.0"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "92219b62b3e2b4d88ac5119f8904c10f8f61bf7e95b640d25ba3075e6cac2c29"
+checksum = "d56e28588da92eee5c3201a6eff33fabdd49b62269c8938d4ff050ce4d900deb"
 dependencies = [
  "displaydoc",
  "litemap",
  "tinystr",
  "writeable",
@@ -872,13 +878,13 @@
  "zerovec",
 ]
 
 [[package]]
 name = "icu_normalizer"
-version = "2.2.0"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c56e5ee99d6e3d33bd91c5d85458b6005a22140021cc324cea84dd0e72cff3b4"
+checksum = "12f9cf5f235641ed274641dd81c3f28d870e276763d0797aeeab72317b1c646f"
 dependencies = [
  "icu_collections",
  "icu_normalizer_data",
  "icu_properties",
  "icu_provider",
@@ -886,20 +892,21 @@
  "zerovec",
 ]
 
 [[package]]
 name = "icu_normalizer_data"
-version = "2.2.0"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da3be0ae77ea334f4da67c12f149704f19f81d1adf7c51cf482943e84a2bad38"
+checksum = "1563da1ed3e0b3bf3d74c9b85917ac9c56464d2f57242270c09c9e752f8021a0"
 
 [[package]]
 name = "icu_properties"
-version = "2.2.0"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bee3b67d0ea5c2cca5003417989af8996f8604e34fb9ddf96208a033901e70de"
+checksum = "7e7ca276ad3145661a65914e6daf131ca5120cd3dcee8f8f3214b8875184a148"
 dependencies = [
+ "displaydoc",
  "icu_collections",
  "icu_locale_core",
  "icu_properties_data",
  "icu_provider",
  "zerotrie",
@@ -906,19 +913,19 @@
  "zerovec",
 ]
 
 [[package]]
 name = "icu_properties_data"
-version = "2.2.0"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e2bbb201e0c04f7b4b3e14382af113e17ba4f63e2c9d2ee626b720cbce54a14"
+checksum = "e590f038c1464a96894fd6d10127e90a8be4509f56ff7ecef851b15cee0b7caa"
 
 [[package]]
 name = "icu_provider"
-version = "2.2.0"
+version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "139c4cf31c8b5f33d7e199446eff9c1e02decfc2f0eec2c8d71f65befa45b421"
+checksum = "d27bbb9d3abbefac45d55f647c9de1d44aafcd1186eb91879afef17c396c3e73"
 dependencies = [
  "displaydoc",
  "icu_locale_core",
  "writeable",
  "yoke",
@@ -954,23 +961,23 @@
  "icu_properties",
 ]
 
 [[package]]
 name = "indexmap"
-version = "2.14.0"
+version = "2.14.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d466e9454f08e4a911e14806c24e16fba1b4c121d1ea474396f396069cf949d9"
+checksum = "cc4e190f5d26ca7051642629da2c52fc03bde85a03197c99408dcd291734c855"
 dependencies = [
  "equivalent",
  "hashbrown",
 ]
 
 [[package]]
 name = "ipnet"
-version = "2.12.0"
+version = "2.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d98f6fed1fde3f8c21bc40a1abb88dd75e67924f9cffc3ef95607bad8017f8e2"
+checksum = "791930b43c0d5973160d90a8f3894509f2b273430f5c5c73b668636d0287c5c0"
 
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1041,13 +1048,13 @@
  "libc",
 ]
 
 [[package]]
 name = "js-sys"
-version = "0.3.103"
+version = "0.3.105"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53b44bfcdb3f8d5837a46dae1ca9660a837176eee74a28b229bc626816589102"
+checksum = "ce57d20d1ea864ce2ac172ab472d409214f4fd359f0b2a2775abdf522e2af99e"
 dependencies = [
  "cfg-if",
  "futures-util",
  "wasm-bindgen",
 ]
@@ -1070,31 +1077,31 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32a66949e030da00e8c7d4434b251670a91556f4144941d37452769c25d58a53"
 
 [[package]]
 name = "litemap"
-version = "0.8.2"
+version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "92daf443525c4cce67b150400bc2316076100ce0b3686209eb8cf3c31612e6f0"
+checksum = "47d9d19d1d6efa0109d2f65ff4c85cddd50bd572e5a00127ab10987290bcefae"
 
 [[package]]
 name = "log"
-version = "0.4.33"
+version = "0.4.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ceec5bc11778974d1bcb055b18002eba7f4b3518b6a0081b3af5f21666da9ad"
+checksum = "f9f8bd3e56ce4dfc153cf470fffbfa98c7620958b312ca5c3a4b8d5181fd13c6"
 
 [[package]]
 name = "lru-slab"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "112b39cec0b298b6c1999fee3e31427f74f676e4cb9879ed1a121b43661a4154"
 
 [[package]]
 name = "mail-parser"
-version = "0.11.5"
+version = "0.11.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47785d444be4d32c1709171c6219a90f667c0ad0ffe68b4b179e794f31f4f9e8"
+checksum = "0b3a9080c1fb8190e232df37a10aa1b3d6b08be084e537069913f025e0ce86c5"
 dependencies = [
  "hashify",
 ]
 
 [[package]]
@@ -1153,13 +1160,13 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
 
 [[package]]
 name = "mio"
-version = "1.2.2"
+version = "1.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "30d65c71f1ce40ab09135ce117d742b9f8a19ff91a41a8b57ed50bc2de59c427"
+checksum = "4b18443e9c262bfe8fa82f51666e2642c53393f7e5c27b3e1aeab922cff5b9d8"
 dependencies = [
  "libc",
  "wasi",
  "windows-sys 0.61.2",
 ]
@@ -1192,13 +1199,13 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c87def4c32ab89d880effc9e097653c8da5d6ef28e6b539d313baaacfbafcbe"
 
 [[package]]
 name = "owo-colors"
-version = "4.3.0"
+version = "4.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d211803b9b6b570f68772237e415a029d5a50c65d382910b879fb19d3271f94d"
+checksum = "13c45bb4a6ae1280ec0803b1ef9d3455eb50f01efbbe1447ab020f1d54fba9d8"
 
 [[package]]
 name = "parking"
 version = "2.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1233,13 +1240,13 @@
  "futures-io",
 ]
 
 [[package]]
 name = "pkg-config"
-version = "0.3.33"
+version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19f132c84eca552bf34cab8ec81f1c1dcc229b811638f9d283dceabe58c5569e"
+checksum = "f6b464fbc74e149a392436b17d523f769e057cb6877f6a5c4618bc6f11800548"
 
 [[package]]
 name = "polling"
 version = "3.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1253,13 +1260,13 @@
  "windows-sys 0.61.2",
 ]
 
 [[package]]
 name = "potential_utf"
-version = "0.1.5"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0103b1cef7ec0cf76490e969665504990193874ea05c85ff9bab8b911d0a0564"
+checksum = "d83eb9bc6d8e5cf568e7a1101d60ee05e81ed50ea106026f3d18deeb046d7661"
 dependencies = [
  "zerovec",
 ]
 
 [[package]]
@@ -1291,13 +1298,13 @@
  "web-time",
 ]
 
 [[package]]
 name = "quinn-proto"
-version = "0.11.16"
+version = "0.11.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f4bfc015262b9df63c8845072ce59068853ff5872180c2ce2f13038b970e560"
+checksum = "04759210543be93709136e28212294a659ef5001836ff4eab4d663e4529bba83"
 dependencies = [
  "aws-lc-rs",
  "bytes",
  "getrandom 0.4.3",
  "lru-slab",
@@ -1381,13 +1388,13 @@
  "regex-syntax",
 ]
 
 [[package]]
 name = "regex-automata"
-version = "0.4.16"
+version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8fcfdb36bda0c880c5931cdc7a2bcdc8ba4556847b9d912bca70bc94708711ad"
+checksum = "ad8553b9b26413251cbf30e620595c7a41b3887f03da04579c0e6b0d6a06b4b2"
 dependencies = [
  "aho-corasick",
  "memchr",
  "regex-syntax",
 ]
@@ -1398,15 +1405,15 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6f6ff9a378485b298a5286656da665ba74413d36db0979633275d2e708145d4"
 
 [[package]]
 name = "reqwest"
-version = "0.13.4"
+version = "0.13.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "219c5811de6525e5416c7d5d53bb656d3afdbc6c5af816e0802bcfa42dbdc1c3"
+checksum = "16a1cfa75cc186dd73d5818e510e042e40927bccc9c236b061cea97e1eb08029"
 dependencies = [
- "base64",
+ "base64 0.23.1",
  "bytes",
  "futures-core",
  "futures-util",
  "http",
  "http-body",
@@ -1481,13 +1488,13 @@
  "windows-sys 0.61.2",
 ]
 
 [[package]]
 name = "rustls"
-version = "0.23.43"
+version = "0.23.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0283386ce02abc0151e1761d08802dfe86c173b0b494af5cbc086574e453da06"
+checksum = "6725596c3f2c3a0aef021139e145d4eafe314a6623e4680ca83852b2c67ab2ba"
 dependencies = [
  "aws-lc-rs",
  "log",
  "once_cell",
  "rustls-pki-types",
@@ -1554,13 +1561,13 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f87165f0995f63a9fbeea62b64d10b4d9d8e78ec6d7d51fb2125fda7bb36788f"
 
 [[package]]
 name = "rustls-webpki"
-version = "0.103.13"
+version = "0.103.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "61c429a8649f110dddef65e2a5ad240f747e85f7758a6bccc7e5777bd33f756e"
+checksum = "f3c3cf1d8b1e7d4927e2d154c3fcb02979afb9939629c62cd9048d4f07b60ac2"
 dependencies = [
  "aws-lc-rs",
  "ring",
  "rustls-pki-types",
  "untrusted",
@@ -1650,11 +1657,11 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e7a5d71263a5a7d47b41f6b3f06ba276f10cc18b0931f1799f710578e2309348"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.3",
+ "syn 3.0.5",
 ]
 
 [[package]]
 name = "serde_json"
 version = "1.0.151"
@@ -1677,28 +1684,28 @@
  "serde_core",
 ]
 
 [[package]]
 name = "serde_with"
-version = "3.21.0"
+version = "3.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76a5c54c7310e7b8b9577c286d7e399ddd876c3e12b3ed917a8aabc4b96e9e8c"
+checksum = "935177bb8c0cd8ca1a4e6d1a2ac8988bea69cab4f9d3a31311e012ad27868ea4"
 dependencies = [
  "serde_core",
  "serde_with_macros",
 ]
 
 [[package]]
 name = "serde_with_macros"
-version = "3.21.0"
+version = "3.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "84d57bc0c8b9a17920c178daa6bb924850d54a9c97ab45194bb8c17ad66bb660"
+checksum = "1d607aa01a3cb0ad757d6fd216136910db3c97b102fe686585689615a02dbcdc"
 dependencies = [
  "darling",
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.5",
 ]
 
 [[package]]
 name = "shellwords"
 version = "1.1.0"
@@ -1753,13 +1760,13 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "aca054fd9f8c2ebe8557a2433f307e038c0716124efd045daa0388afa5172189"
 
 [[package]]
 name = "smallvec"
-version = "1.15.2"
+version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ed6a63f02c8539c91a8685a86f4099661ba3da017932f6ebbea6de3f0fa7c90"
+checksum = "b9be42f50aa861c555654aa3a37f52f4b1074bacf4e48fe0ef7fa584e80f1f0f"
 
 [[package]]
 name = "smol"
 version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1776,11 +1783,11 @@
  "futures-lite",
 ]
 
 [[package]]
 name = "smtp2tg"
-version = "0.6.7"
+version = "0.6.8"
 dependencies = [
  "async-compat",
  "clap",
  "config",
  "hostname",
@@ -1809,13 +1816,13 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6ce2be8dc25455e1f91df71bfa12ad37d7af1092ae736f3a6cd0e37bc7810596"
 
 [[package]]
 name = "stacked_errors"
-version = "0.7.1"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "45ef11d2fabcf9a75b82a9d80966bde3257410b1245b31f1fb6849103ceda0c3"
+checksum = "20c69576a35329734cdff3cd778febaf9cc4caee9f12e5219c2ea040f1a76a1a"
 dependencies = [
  "owo-colors",
  "smallbox",
  "thin-vec",
  "thiserror",
@@ -1844,13 +1851,13 @@
  "unicode-ident",
 ]
 
 [[package]]
 name = "syn"
-version = "3.0.3"
+version = "3.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53e9bae58849f64dfa4f5d5ae372c8341f7305f82a3868709269343628b659a3"
+checksum = "12df2e0110f65b775f769bb17ef989067a1d931b2eb822bd4346631eeada89f9"
 dependencies = [
  "proc-macro2",
  "quote",
  "unicode-ident",
 ]
@@ -1881,18 +1888,19 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9d4ae32d0a4605a89c28534371b056919c12e7a070ee07505af75130ff030111"
 
 [[package]]
 name = "tgbot"
-version = "0.46.0"
+version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc05e21aac7632767ffd5ef7d9573473ede11f77d7f68aa06b64cee747171433"
+checksum = "7f48a1d2ad66e77ebd16e857ea3925cfb5e19a34fe2c39a77f3c8c367694c80a"
 dependencies = [
  "async-stream",
  "bytes",
  "derive_more",
  "futures-util",
+ "itoa",
  "log",
  "mime",
  "mime_guess",
  "reqwest",
  "serde",
@@ -1899,10 +1907,11 @@
  "serde_json",
  "serde_with",
  "shellwords",
  "tokio",
  "tokio-util",
+ "zmij",
 ]
 
 [[package]]
 name = "thin-vec"
 version = "0.2.19"
@@ -1909,43 +1918,43 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "79def32ffcd477db1ff26f76dab9e3a91f0bd42a85ca96577089b24623056f9d"
 
 [[package]]
 name = "thiserror"
-version = "2.0.19"
+version = "2.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09a43598840e33d5b0331f38c5e30d13bb11c11210a4b58f0d9b18a5a5eefcd9"
+checksum = "ec86235f5fcc2a73650310756d2ac5b138a5780bbbdfae3eeccec992c435ba4f"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "2.0.19"
+version = "2.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43cbfe0cf76104d42a574802844187e84a305e531ed54455f11fbde0f10541cd"
+checksum = "bc04cd3e1236dd4a98afca4569f2deb3f120e5422a4023be2cb683f8486292af"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.3",
+ "syn 3.0.5",
 ]
 
 [[package]]
 name = "tinystr"
-version = "0.8.3"
+version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c8323304221c2a851516f22236c5722a72eaa19749016521d6dff0824447d96d"
+checksum = "b1e27c91459209c2986af3dcf603a5a74a4368754ce37414f59acc971167f643"
 dependencies = [
  "displaydoc",
  "zerovec",
 ]
 
 [[package]]
 name = "tinyvec"
-version = "1.12.0"
+version = "1.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb4ebadaa0af04fab11ae01eb5f9fdb5f9c5b875506e210e71c07873528baa7f"
+checksum = "4cf0ded5c4e56918d8f8a339e1bb67d038d3bc6d144ac407904015ba2e4cde9b"
 dependencies = [
  "tinyvec_macros",
 ]
 
 [[package]]
@@ -1968,13 +1977,13 @@
  "windows-sys 0.61.2",
 ]
 
 [[package]]
 name = "tokio-rustls"
-version = "0.26.4"
+version = "0.26.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1729aa945f29d91ba541258c8df89027d5792d85a8841fb65e8bf0f4ede4ef61"
+checksum = "b0c85f2c3ef0b1cd58b36682f4b17aaa995f0e5db534d85692b4903abce21f67"
 dependencies = [
  "rustls",
  "tokio",
 ]
 
@@ -1992,13 +2001,13 @@
  "tokio",
 ]
 
 [[package]]
 name = "toml"
-version = "1.1.4+spec-1.1.0"
+version = "1.1.5+spec-1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3aace63f4bbcdfc2c965b059de67119c89c4017a70d633be6c104910f67056f5"
+checksum = "12c0ba9680044b4ce98d391a62094047eada0d64860b80166c39f4a6b5640785"
 dependencies = [
  "serde_core",
  "serde_spanned",
  "toml_datetime",
  "toml_parser",
@@ -2160,13 +2169,13 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.126"
+version = "0.2.128"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b067c0c11094aef6b7a801c1e34a26affafdf3d051dba08456b868789aaf9a4"
+checksum = "aecb87a33d3b0c5e3b7aa46336eaf486cffafbd281b195e4c8b80d50df2351bf"
 dependencies = [
  "cfg-if",
  "once_cell",
  "rustversion",
  "wasm-bindgen-macro",
@@ -2173,46 +2182,46 @@
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-futures"
-version = "0.4.76"
+version = "0.4.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c62df1340f32221cb9c54d6a27b030e3dba64361d4a95bed55f9aacb44da291d"
+checksum = "6ef4c5d3d2cdf5c54f4231181768f5510842e350db025faf1f7163b1030ed928"
 dependencies = [
  "js-sys",
  "wasm-bindgen",
 ]
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.126"
+version = "0.2.128"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "167ce5e579f6bcf889c4f7175a8a5a585de84e8ff93976ce393efa5f2837aab1"
+checksum = "a690d511e3c1a8b3a55e33511e3c2c00c78415cd23650f32b808627f5696b9ed"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
 ]
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.126"
+version = "0.2.128"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3997c7839262f4ef12cf90b818d6340c18e80f263f1a94bf157d0ec4420380e"
+checksum = "411e4887f0071ef2d2164a9d5fdf2d20efbef78fccd3a78b0c10a1dc5295e48a"
 dependencies = [
  "bumpalo",
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.5",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.126"
+version = "0.2.128"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc1b4cb0cc549fcf58d7dfc081778139b3d283a081644e833e84682ad71cea24"
+checksum = "81941cd78d0c92026c33e5e01312845a4cb1e9af3407f9134b100dd03144103e"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
@@ -2228,13 +2237,13 @@
  "web-sys",
 ]
 
 [[package]]
 name = "web-sys"
-version = "0.3.103"
+version = "0.3.105"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8622dcb61c0bcc9fffa6938bed81210af2da9a7e4a1a834b2e37a59b6dfb6141"
+checksum = "9fbddc4a036f00ec4f18c83445bd3115cb306a91da554919a099d9222fe4a7f8"
 dependencies = [
  "js-sys",
  "wasm-bindgen",
 ]
 
@@ -2363,13 +2372,13 @@
  "memchr",
 ]
 
 [[package]]
 name = "writeable"
-version = "0.6.3"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ffae5123b2d3fc086436f8834ae3ab053a283cfac8fe0a0b8eaae044768a4c4"
+checksum = "3ad82d2a33cdc9674dc7465672f271e096168fcdbe0f799d9e6db8c5892679dc"
 
 [[package]]
 name = "yoke"
 version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -2419,41 +2428,41 @@
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e13c156562582aa81c60cb29407084cdb54c4164760106ab78e6c5b0858cf64e"
 
 [[package]]
 name = "zerotrie"
-version = "0.2.4"
+version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f9152d31db0792fa83f70fb2f83148effb5c1f5b8c7686c3459e361d9bc20bf"
+checksum = "4ea269c3bd32f0a32c321907a2ae912ba6f4649bb0fc764a15627e99a7095a3f"
 dependencies = [
  "displaydoc",
  "yoke",
  "zerofrom",
 ]
 
 [[package]]
 name = "zerovec"
-version = "0.11.6"
+version = "0.11.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90f911cbc359ab6af17377d242225f4d75119aec87ea711a880987b18cd7b239"
+checksum = "bb0464e17806c1d976d5cba29399c7f08e516e279e2ba493f63123b5fca67dd8"
 dependencies = [
  "yoke",
  "zerofrom",
  "zerovec-derive",
 ]
 
 [[package]]
 name = "zerovec-derive"
-version = "0.11.3"
+version = "0.11.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "625dc425cab0dca6dc3c3319506e6593dcb08a9f387ea3b284dbd52a92c40555"
+checksum = "34df6fc39dbd26ddc9c10e6a2984476e13acce22e64e4487636ef494369225da"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.5",
 ]
 
 [[package]]
 name = "zmij"
 version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "29666d0abbfad1e3dc4dcf6144730dd3a3ab225bbbdac83319345b1b44ccfc1b"

Index: Cargo.toml
==================================================================
--- Cargo.toml	
+++ Cargo.toml	
@@ -1,8 +1,8 @@
 [package]
 name = "smtp2tg"
-version = "0.6.7"
+version = "0.6.8"
 authors = [ "arcade@b1t.name" ]
 edition = "2024"
 license = "0BSD"
 repository = "http://fs.b1t.name/smtp2tg"
 
@@ -14,19 +14,15 @@
 clap = { version = "4.6", features = [ "derive" ] }
 mail-parser = "0.11"
 mailin-embedded = "0.8"
 regex = "1.11.1"
 smol = "2.0.2"
-stacked_errors = "0.7.1"
-tgbot = "0.46"
-
-[profile.release]
-lto = true
-codegen-units = 1
+stacked_errors = "0.8"
+tgbot = "0.48"
 
 # All tests are moved to tests/
 [lib]
 test = false
 
 [[bin]]
 test = false
 name = "smtp2tg"

Index: smtp2tg.toml.example
==================================================================
--- smtp2tg.toml.example	
+++ smtp2tg.toml.example	
@@ -6,30 +6,28 @@
 api_gateway = "https://api.telegram.org" # <- note no trailing slash
 
 # where to listen on (sockets are not supported since 0.3.0)
 listen_on = "0.0.0.0:25"
 
-# whether we need to handle unknown adresses
-# - relay: send them to default one
-# - deny: drop them
-unknown = "relay"
-
-# default fields to show in message header
-fields = [ "date", "from", "subject" ]
+# default hostname to use when serving requests
+hostname = "smtp2tg"
 
 # which domains are allowed in addresses
 # this means that any unqualified recipient "somebody" will also match
 # to "somebody@each_domain"
 domains = [ "localhost", "current.hostname" ]
 
 # default recipient, should be specified
-# still can be a user, channel or group
+# still can be a user, channel or group id
 default = 0
+
+# default fields to show in message header
+fields = [ "date", "from", "subject" ]
 
 [recipients]
 # make sure you quote emails, as "@" can't go there unquoted. And by default
-# we need FQDNs
+# we need FQDNs, also keep in mind emails are case insensitive
 "somebody@example.com" = 1 # user id's are positive
 "root" = -1 # group id's are negative
 
 # to look up chat/group id you can use debug settings in Telegram clients,
 # or some bot like @getidsbot or @RawDataBot

Index: src/lib.rs
==================================================================
--- src/lib.rs	
+++ src/lib.rs	
@@ -37,31 +37,38 @@
 	/// Set configuration file location
 	#[arg(short, long, default_value = "smtp2tg.toml")]
 	config: String,
 }
 
-/// Main asynchronous entry point for the application.
+/// Main asynchronous entry point for the application. Runs the gateway using
+/// the configuration selected on the command line.
 ///
-/// Parses command-line arguments, loads configuration, and starts the SMTP
-/// server.
+/// The configuration file must use owner-only permissions. Once configured,
+/// the SMTP server runs until it stops or encounters an error.
 ///
 /// # Errors
-/// Returns an error if configuration is invalid, files are inaccessible, or
-/// server fails to start.
+/// Returns an error if the configuration file is missing, inaccessible,
+/// insecure, malformed, or contains invalid required settings.
+///
+/// # Panics
+/// Panics if configuring or serving the SMTP server fails.
 pub async fn async_main () -> Result<()> {
 	let args = Args::parse();
 	let config_file = Path::new(&args.config);
-	if !config_file.exists() {
-		bail!("can't read configuration from {config_file:?}");
+	if !config_file.try_exists().stack()? {
+		bail!("Configuration file not found: {config_file:?}\n\
+			Hint: Ensure the file exists and the path is correct.");
 	};
 	{
 		let meta = metadata(config_file).await.stack()?;
 		if (!0o100600 & meta.permissions().mode()) > 0 {
-			bail!("other users can read or write config file {config_file:?}\n\
-				File permissions: {:o}", meta.permissions().mode());
-		}
-	}
+			bail!("Configuration file permissions are insecure {config_file:?}\n\
+				Current permissions: {:o}\n\
+				Required: 0600 (owner read/write only).\n\
+				Fix with: chmod 600 {config_file:?}",
+				meta.permissions().mode());
+	}	}
 	let settings: config::Config = config::Config::builder()
 		.set_default("api_gateway", "https://api.telegram.org").stack()?
 		.set_default("fields", vec!["date", "from", "subject"]).stack()?
 		.set_default("hostname", "smtp.2.tg").stack()?
 		.set_default("listen_on", "0.0.0.0:1025").stack()?
@@ -68,12 +75,15 @@
 		.set_default("domains", vec!["localhost",
 			hostname::get().context("Failed to get current hostname")?
 			.to_str().context("Can't convert hostname to string, bad UTF-8?")?]).stack()?
 		.add_source(config::File::from(config_file))
 		.build()
-		.with_context(|| format!("[{config_file:?}] there was an error reading config\n\
-			\tplease consult \"smtp2tg.toml.example\" for details"))?;
+		.with_context(|| format!(
+			"Failed to parse configuration file: {config_file:?}\n\
+			Check syntax against smtp2tg.toml.example.\n\
+			Common issues: missing quotes, trailing commas in inline tables, or invalid types."
+		))?;
 
 	let listen_on = settings.get_string("listen_on").stack()?;
 	let server_name = settings.get_string("hostname").stack()?;
 	let core = MailServer::new(settings)?;
 	let mut server = mailin_embedded::Server::new(core);

Index: src/mail.rs
==================================================================
--- src/mail.rs	
+++ src/mail.rs	
@@ -68,11 +68,10 @@
 	/// # Arguments
 	/// * `settings` - Parsed application configuration.
 	///
 	/// # Errors
 	/// Returns an error if required configuration values are missing or invalid.
-	/// server fails to start.
 	pub fn new (settings: config::Config) -> Result<MailServer> {
 		let api_key = settings.get_string("api_key")
 			.context("[smtp2tg.toml] missing \"api_key\" parameter.\n")?;
 		let mut recipients = HashMap::new();
 		for (name, value) in settings.get_table("recipients")
@@ -93,19 +92,20 @@
 		for domain in extra_domains {
 			let domain = domain.to_string().to_lowercase();
 			if RE_DOMAIN.is_match(&domain) {
 				domains.insert(domain);
 			} else {
-				bail!("[smtp2tg.toml] can't check domains in \"domains\": {domain}");
-			}
-		}
+				bail!("Invalid domain in configuration: '{domain}'\n\
+					Domains must be valid (e.g., 'example.com', 'localhost').\n\
+					Check 'domains' array in smtp2tg.toml.");
+		}	}
 		if domains.is_empty() {
 			bail!("No domains, need at least one: default `localhost` would do.");
 		}
-		let domains = domains.into_iter().map(|s| escape(&s))
+		let re_domains = domains.iter().map(|s| escape(s))
 			.collect::<Vec<String>>().join("|");
-		let address = RegexBuilder::new(&format!("^[a-z0-9][a-z0-9.-]*(@({domains}))?$"))
+		let address = RegexBuilder::new(&format!("^[a-z0-9][a-z0-9.-]*(@({re_domains}))?$"))
 			.case_insensitive(true).build().stack()?;
 
 		Ok(MailServer {
 			data: vec!(),
 			headers: None,
@@ -126,13 +126,12 @@
 	///   not found.
 	pub fn get_id (&self, name: &str) -> Result<&ChatPeerId> {
 		if self.address.is_match(name) {
 			Ok(self.tg.get(name).unwrap_or(&self.tg.default))
 		} else {
-			bail!("Doesn't look like address from one of our domains.");
-		}
-	}
+			bail!("Email address {name:?} is not from an allowed domain.");
+	}	}
 
 	/// Attempt to deliver one message
 	async fn relay_mail (&self) -> Result<()> {
 		if let Some(headers) = &self.headers {
 			let mail = mail_parser::MessageParser::new().parse(&self.data)

Index: src/telegram.rs
==================================================================
--- src/telegram.rs	
+++ src/telegram.rs	
@@ -20,17 +20,18 @@
 	types::{
 		ChatPeerId,
 		InputFile,
 		InputFileReader,
 		InputMediaDocument,
+		InputText,
 		MediaGroup,
 		MediaGroupItem,
 		Message,
 		ParseMode::Html,
+		SendDocument,
 		SendMediaGroup,
 		SendMessage,
-		SendDocument,
 	},
 };
 
 #[derive(Debug)]
 pub struct TelegramTransport {
@@ -79,11 +80,11 @@
 	/// * `Result<Message>` - Telegram API response.
 	///
 	/// # Errors
 	/// Returns an error if `msg` contains a closing Telegram tag or sending fails.
 	pub async fn debug (&self, msg: &str) -> Result<Message> {
-		self.send(&self.default, format!("<pre>{}</pre>", validate(msg).stack()?)).await
+		self.send(&self.default, &format!("<pre>{}</pre>", validate(msg).stack()?)).await
 	}
 
 	/// Retrieves a chat ID by name.
 	///
 	/// # Arguments
@@ -94,11 +95,11 @@
 	///
 	/// # Errors
 	/// Returns an error if `name` is not configured.
 	pub fn get (&self, name: &str) -> Result<&ChatPeerId> {
 		self.recipients.get(&name.to_lowercase())
-			.with_context(|| format!("Recipient \"{name}\" not found in configuration"))
+			.with_context(|| format!("Recipient {name:?} not found in configuration"))
 	}
 
 	/// Sends a text message to a specified chat.
 	///
 	/// # Arguments
@@ -105,15 +106,13 @@
 	/// * `to` - Target chat ID.
 	/// * `msg` - Message text (supports HTML formatting).
 	///
 	/// # Returns
 	/// * `Result<Message>` - Telegram API response.
-	pub async fn send <S> (&self, to: &ChatPeerId, msg: S) -> Result<Message>
-	where S: Into<String> + Debug{
+	pub async fn send (&self, to: &ChatPeerId, msg: &str) -> Result<Message> {
 		self.tg.execute(
-			SendMessage::new(*to, msg)
-			.with_parse_mode(Html)
+			SendMessage::new(*to, InputText::from(msg).with_format(Html))
 		).await.stack()
 	}
 
 	/// Sends a message with attachments to a specified chat.
 	///
@@ -121,31 +120,29 @@
 	/// * `to` - Target chat ID.
 	/// * `media` - List of attachments, non-empty.
 	/// * `msg` - Message text (supports HTML formatting).
 	///
 	/// # Returns
-	/// * `Result<()>` - Success or error.
+	/// * `Result<()>` - fails if `media` is empty, problems forming media
+	///   group, request fails.
 	pub async fn sendgroup (&self, to: &ChatPeerId, media: Vec<Attachment>, msg: &str) -> Result<()> {
 		if media.len() > 1 {
 			let mut attach = vec![];
 			let mut pos = media.len();
 			for file in media {
-				let mut caption = InputMediaDocument::default();
+				let mut doc = InputMediaDocument::from(
+					InputFile::from(
+						InputFileReader::from(file.data)
+							.with_file_name(file.name)
+					)
+				);
 				if pos == 1 {
-					caption = caption.with_caption(msg)
-						.with_caption_parse_mode(Html);
+					doc = doc.with_caption(InputText::from(msg)
+						.with_format(Html));
 				}
 				pos -= 1;
-				attach.push(
-					MediaGroupItem::for_document(
-						InputFile::from(
-							InputFileReader::from(file.data)
-								.with_file_name(file.name)
-						),
-						caption
-					)
-				);
+				attach.push(MediaGroupItem::from(doc));
 			}
 			self.tg.execute(SendMediaGroup::new(*to, MediaGroup::new(attach).stack()?)).await.stack()?;
 		} else {
 			if media.is_empty() {
 				bail!("At least one attachment is required.");
@@ -152,13 +149,13 @@
 			}
 			self.tg.execute(
 				SendDocument::new(
 					*to,
 					InputFileReader::from(media[0].data.clone())
-					.with_file_name(media[0].name.clone())
-				).with_caption(msg)
-				.with_caption_parse_mode(Html)
+						.with_file_name(media[0].name.clone())
+				).with_caption(InputText::from(msg)
+					.with_format(Html))
 			).await.stack()?;
 		}
 		Ok(())
 	}
 }

Index: src/utils.rs
==================================================================
--- src/utils.rs	
+++ src/utils.rs	
@@ -46,10 +46,9 @@
 ///
 /// # Errors
 /// Returns an error if the text contains Telegram closing tags (`</pre>`, `</code>`).
 pub fn validate <'a>(text: &'a str) -> Result<Cow<'a, str>> {
 	if RE_CLOSING.is_match(text) {
-		bail!("Telegram closing tag found.");
+		bail!("Text contains a Telegram closing tag (e.g., </pre>, </code>).");
 	} else {
 		Ok(encode_text(text))
-	}
-}
+}	}