From 9062dbb231d035cea2efea8a8e3cfc1459b21565 Mon Sep 17 00:00:00 2001
From: Patrick <patrick@failmail.dev>
Date: Mon, 15 Jul 2024 22:09:52 +0200
Subject: [PATCH] feat: added mail notifications

---
 Cargo.lock  | 540 ++++++++++++++++++++++++++++++++++++++++++++++++----
 Cargo.toml  |   2 +
 src/mail.rs |  59 ++++++
 src/main.rs |  17 +-
 4 files changed, 580 insertions(+), 38 deletions(-)
 create mode 100644 src/mail.rs

diff --git a/Cargo.lock b/Cargo.lock
index c5d2f88..e3a5753 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,21 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "addr2line"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a30b2e23b9e17a9f90641c7ab1549cd9b44f296d3ccbf309d2863cfe398a0cb"
+dependencies = [
+ "gimli",
+]
+
+[[package]]
+name = "adler"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
+
 [[package]]
 name = "aead"
 version = "0.3.2"
@@ -56,6 +71,18 @@ dependencies = [
  "opaque-debug",
 ]
 
+[[package]]
+name = "ahash"
+version = "0.8.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e89da841a80418a9b391ebaea17f5c112ffaaa96f621d2c285b5174da76b9011"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "version_check",
+ "zerocopy",
+]
+
 [[package]]
 name = "aho-corasick"
 version = "1.1.2"
@@ -65,6 +92,12 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "allocator-api2"
+version = "0.2.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c6cb57a04249c6480766f7f7cef5467412af1490f8d1e243141daddada3264f"
+
 [[package]]
 name = "ansi_term"
 version = "0.12.1"
@@ -76,9 +109,9 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.75"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4668cab20f66d8d020e1fbc0ebe47217433c1b6c8f2040faf858554e394ace6"
+checksum = "b3d1d046238990b9cf5bcde22a3fb3584ee5cf65fb2765f454ed428c7a0063da"
 
 [[package]]
 name = "ascii"
@@ -236,7 +269,7 @@ dependencies = [
  "polling 2.8.0",
  "rustix 0.37.27",
  "slab",
- "socket2",
+ "socket2 0.4.10",
  "waker-fn",
 ]
 
@@ -253,11 +286,11 @@ dependencies = [
  "futures-lite 2.0.1",
  "parking",
  "polling 3.3.0",
- "rustix 0.38.24",
+ "rustix 0.38.28",
  "slab",
  "tracing",
  "waker-fn",
- "windows-sys",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -293,8 +326,8 @@ dependencies = [
  "cfg-if",
  "event-listener 3.1.0",
  "futures-lite 1.13.0",
- "rustix 0.38.24",
- "windows-sys",
+ "rustix 0.38.28",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -309,10 +342,10 @@ dependencies = [
  "cfg-if",
  "futures-core",
  "futures-io",
- "rustix 0.38.24",
+ "rustix 0.38.28",
  "signal-hook-registry",
  "slab",
- "windows-sys",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -397,6 +430,21 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
+[[package]]
+name = "backtrace"
+version = "0.3.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2089b7e3f35b9dd2d0ed921ead4f6d318c27680d4a5bd167b3ee120edb105837"
+dependencies = [
+ "addr2line",
+ "cc",
+ "cfg-if",
+ "libc",
+ "miniz_oxide",
+ "object",
+ "rustc-demangle",
+]
+
 [[package]]
 name = "base-x"
 version = "0.2.11"
@@ -409,6 +457,12 @@ version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
 
+[[package]]
+name = "base64"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
+
 [[package]]
 name = "basic-toml"
 version = "0.1.7"
@@ -494,6 +548,16 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chumsky"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8eebd66744a15ded14960ab4ccdbfb51ad3b81f51f3f04a80adac98c985396c9"
+dependencies = [
+ "hashbrown",
+ "stacker",
+]
+
 [[package]]
 name = "cipher"
 version = "0.2.5"
@@ -553,7 +617,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "03a5d7b21829bc7b4bf4754a978a241ae54ea55a40f92bb20216e54096f4b951"
 dependencies = [
  "aes-gcm",
- "base64",
+ "base64 0.13.1",
  "hkdf",
  "hmac",
  "percent-encoding",
@@ -563,6 +627,22 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "core-foundation"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91e195e091a93c46f7102ec7818a2aa394e1e1771c3ab4825963fa03e45afb8f"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
+[[package]]
+name = "core-foundation-sys"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06ea2b9bc92be3c2baa9334a323ebca2d6f074ff852cd1d7b11064035cd3868f"
+
 [[package]]
 name = "cpufeatures"
 version = "0.2.11"
@@ -617,7 +697,7 @@ dependencies = [
  "openssl-probe",
  "openssl-sys",
  "schannel",
- "socket2",
+ "socket2 0.4.10",
  "winapi",
 ]
 
@@ -634,7 +714,7 @@ dependencies = [
  "openssl-sys",
  "pkg-config",
  "vcpkg",
- "windows-sys",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -658,6 +738,22 @@ version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07"
 
+[[package]]
+name = "email-encoding"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "60d1d33cdaede7e24091f039632eb5d3c7469fe5b066a985281a34fc70fa317f"
+dependencies = [
+ "base64 0.22.1",
+ "memchr",
+]
+
+[[package]]
+name = "email_address"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c1019fa28f600f5b581b7a603d515c3f1635da041ca211b5055804788673abfe"
+
 [[package]]
 name = "encoding_rs"
 version = "0.8.33"
@@ -678,12 +774,12 @@ dependencies = [
 
 [[package]]
 name = "errno"
-version = "0.3.7"
+version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f258a7194e7f7c2a7837a8913aeab7fd8c383457034fa20ce4dd3dcb813e8eb8"
+checksum = "534c5cf6194dfab3db3242765c03bbe257cf92f22b38f6bc0c58d59108a820ba"
 dependencies = [
  "libc",
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -761,6 +857,21 @@ version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
+[[package]]
+name = "foreign-types"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
+dependencies = [
+ "foreign-types-shared",
+]
+
+[[package]]
+name = "foreign-types-shared"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
+
 [[package]]
 name = "form_urlencoded"
 version = "1.2.0"
@@ -897,6 +1008,12 @@ dependencies = [
  "polyval",
 ]
 
+[[package]]
+name = "gimli"
+version = "0.28.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4271d37baee1b8c7e4b708028c57d816cf9d2434acb33a549475f78c181f6253"
+
 [[package]]
 name = "gloo-timers"
 version = "0.2.6"
@@ -967,6 +1084,16 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.14.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
+dependencies = [
+ "ahash",
+ "allocator-api2",
+]
+
 [[package]]
 name = "heck"
 version = "0.3.3"
@@ -1017,6 +1144,17 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "hostname"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9c7c7c8ac16c798734b8a24560c1362120597c40d5e1459f09498f8f6c8f2ba"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "windows",
+]
+
 [[package]]
 name = "http"
 version = "0.2.11"
@@ -1051,7 +1189,7 @@ dependencies = [
  "anyhow",
  "async-channel 1.9.0",
  "async-std",
- "base64",
+ "base64 0.13.1",
  "cookie",
  "futures-lite 1.13.0",
  "infer",
@@ -1070,6 +1208,12 @@ version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d897f394bad6a705d5f4104762e116a75639e470d80901eed05a860a95cb1904"
 
+[[package]]
+name = "httpdate"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df3b46402a9d5adb4c86a0cf463f42e19994e3ee891101b1841f30a545cb49a9"
+
 [[package]]
 name = "humansize"
 version = "2.1.3"
@@ -1089,6 +1233,16 @@ dependencies = [
  "unicode-normalization",
 ]
 
+[[package]]
+name = "idna"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "634d9b1461af396cad843f47fdba5597a4f9e6ddd4bfb6ff5d85028c25cb12f6"
+dependencies = [
+ "unicode-bidi",
+ "unicode-normalization",
+]
+
 [[package]]
 name = "infer"
 version = "0.2.3"
@@ -1112,7 +1266,7 @@ checksum = "eae7b9aee968036d54dce06cebaefd919e4472e753296daccd6d344e3e2df0c2"
 dependencies = [
  "hermit-abi 0.3.3",
  "libc",
- "windows-sys",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -1168,6 +1322,31 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
+[[package]]
+name = "lettre"
+version = "0.11.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a62049a808f1c4e2356a2a380bd5f2aca3b011b0b482cf3b914ba1731426969"
+dependencies = [
+ "base64 0.22.1",
+ "chumsky",
+ "email-encoding",
+ "email_address",
+ "fastrand 2.0.1",
+ "futures-util",
+ "hostname",
+ "httpdate",
+ "idna 0.5.0",
+ "mime",
+ "native-tls",
+ "nom",
+ "percent-encoding",
+ "quoted_printable",
+ "socket2 0.5.7",
+ "tokio",
+ "url",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.150"
@@ -1262,6 +1441,43 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
 
+[[package]]
+name = "miniz_oxide"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8a240ddb74feaf34a79a7add65a741f3167852fba007066dcac1ca548d89c08"
+dependencies = [
+ "adler",
+]
+
+[[package]]
+name = "mio"
+version = "0.8.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4a650543ca06a924e8b371db273b2756685faae30f8487da1b56505a8f78b0c"
+dependencies = [
+ "libc",
+ "wasi 0.11.0+wasi-snapshot-preview1",
+ "windows-sys 0.48.0",
+]
+
+[[package]]
+name = "native-tls"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8614eb2c83d59d1c8cc974dd3f920198647674a0a035e1af1fa58707e317466"
+dependencies = [
+ "libc",
+ "log",
+ "openssl",
+ "openssl-probe",
+ "openssl-sys",
+ "schannel",
+ "security-framework",
+ "security-framework-sys",
+ "tempfile",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -1281,6 +1497,15 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "object"
+version = "0.32.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6a622008b6e321afc04970976f62ee297fdbaa6f95318ca343e3eebb9648441"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.18.0"
@@ -1293,6 +1518,32 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
 
+[[package]]
+name = "openssl"
+version = "0.10.64"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95a0481286a310808298130d22dd1fef0fa571e05a8f44ec801801e84b216b1f"
+dependencies = [
+ "bitflags 2.4.1",
+ "cfg-if",
+ "foreign-types",
+ "libc",
+ "once_cell",
+ "openssl-macros",
+ "openssl-sys",
+]
+
+[[package]]
+name = "openssl-macros"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.39",
+]
+
 [[package]]
 name = "openssl-probe"
 version = "0.1.5"
@@ -1301,9 +1552,9 @@ checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.95"
+version = "0.9.102"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "40a4130519a360279579c2053038317e40eff64d13fd3f004f9e1b72b8a6aaf9"
+checksum = "c597637d56fbc83893a35eb0dd04b2b8e7a50c91e64e9493e398b5df4fb45fa2"
 dependencies = [
  "cc",
  "libc",
@@ -1391,7 +1642,7 @@ dependencies = [
  "libc",
  "log",
  "pin-project-lite 0.2.13",
- "windows-sys",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -1403,9 +1654,9 @@ dependencies = [
  "cfg-if",
  "concurrent-queue",
  "pin-project-lite 0.2.13",
- "rustix 0.38.24",
+ "rustix 0.38.28",
  "tracing",
- "windows-sys",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -1429,11 +1680,13 @@ checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
 name = "pr-tracker"
 version = "1.2.0"
 dependencies = [
+ "anyhow",
  "askama",
  "async-std",
  "futures-util",
  "graphql_client",
  "http-types",
+ "lettre",
  "once_cell",
  "pkg-config",
  "regex",
@@ -1483,6 +1736,15 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "psm"
+version = "0.1.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5787f7cda34e3033a72192c018bc5883100330f362ef279a8cbccfce8bb4e874"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.33"
@@ -1492,6 +1754,12 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "quoted_printable"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "79ec282e887b434b68c18fe5c121d38e72a5cf35119b59e54ec5b992ea9c8eb0"
+
 [[package]]
 name = "rand"
 version = "0.7.3"
@@ -1563,6 +1831,15 @@ dependencies = [
  "rand_core 0.5.1",
 ]
 
+[[package]]
+name = "redox_syscall"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4722d768eff46b75989dd134e5c353f0d6296e5aaa3132e776cbdb56be7731aa"
+dependencies = [
+ "bitflags 1.3.2",
+]
+
 [[package]]
 name = "regex"
 version = "1.10.2"
@@ -1598,6 +1875,12 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "56770675ebc04927ded3e60633437841581c285dc6236109ea25fbf3beb7b59e"
 
+[[package]]
+name = "rustc-demangle"
+version = "0.1.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "719b953e2095829ee67db738b3bfa9fa368c94900df327b3f07fe6e794d2fe1f"
+
 [[package]]
 name = "rustc_version"
 version = "0.2.3"
@@ -1618,20 +1901,20 @@ dependencies = [
  "io-lifetimes",
  "libc",
  "linux-raw-sys 0.3.8",
- "windows-sys",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
 name = "rustix"
-version = "0.38.24"
+version = "0.38.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ad981d6c340a49cdc40a1028d9c6084ec7e9fa33fcb839cab656a267071e234"
+checksum = "72e572a5e8ca657d7366229cdde4bd14c4eb5499a9573d4d366fe1b599daa316"
 dependencies = [
  "bitflags 2.4.1",
  "errno",
  "libc",
  "linux-raw-sys 0.4.11",
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -1646,7 +1929,7 @@ version = "0.1.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c3733bf4cf7ea0880754e19cb5a462007c4a8c1914bff372ccc95b464f1df88"
 dependencies = [
- "windows-sys",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -1655,6 +1938,29 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
+[[package]]
+name = "security-framework"
+version = "2.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "770452e37cad93e0a50d5abc3990d2bc351c36d0328f86cefec2f2fb206eaef6"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation",
+ "core-foundation-sys",
+ "libc",
+ "security-framework-sys",
+]
+
+[[package]]
+name = "security-framework-sys"
+version = "2.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75da29fe9b9b08fe9d6b22b5b4bcbc75d8db3aa31e639aa56bb62e9d46bfceaf"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "semver"
 version = "0.9.0"
@@ -1809,6 +2115,16 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "socket2"
+version = "0.5.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce305eb0b4296696835b71df73eb912e0f1ffd2556a501fcede6e0c50349191c"
+dependencies = [
+ "libc",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "spinning_top"
 version = "0.2.5"
@@ -1818,6 +2134,19 @@ dependencies = [
  "lock_api",
 ]
 
+[[package]]
+name = "stacker"
+version = "0.1.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c886bd4480155fd3ef527d45e9ac8dd7118a898a46530b7b94c3e21866259fce"
+dependencies = [
+ "cc",
+ "cfg-if",
+ "libc",
+ "psm",
+ "winapi",
+]
+
 [[package]]
 name = "standback"
 version = "0.2.17"
@@ -2025,6 +2354,19 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "tempfile"
+version = "3.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01ce4141aa927a6d1bd34a041795abd0db1cccba5d5f24b009f694bdf3a1f3fa"
+dependencies = [
+ "cfg-if",
+ "fastrand 2.0.1",
+ "redox_syscall",
+ "rustix 0.38.28",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "textwrap"
 version = "0.11.0"
@@ -2129,6 +2471,20 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
+[[package]]
+name = "tokio"
+version = "1.38.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba4f4a02a7a80d6f274636f0aa95c7e383b912d41fe721a31f29e29698585a4a"
+dependencies = [
+ "backtrace",
+ "libc",
+ "mio",
+ "pin-project-lite 0.2.13",
+ "socket2 0.5.7",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "tracing"
 version = "0.1.40"
@@ -2245,7 +2601,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "143b538f18257fac9cad154828a57c6bf5157e1aa604d4816b5995bf6de87ae5"
 dependencies = [
  "form_urlencoded",
- "idna",
+ "idna 0.4.0",
  "percent-encoding",
  "serde",
 ]
@@ -2428,13 +2784,41 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "windows"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e48a53791691ab099e5e2ad123536d0fff50652600abaf43bbf952894110d0be"
+dependencies = [
+ "windows-core",
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows-core"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
+dependencies = [
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
 dependencies = [
- "windows-targets",
+ "windows-targets 0.48.5",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -2443,13 +2827,29 @@ version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
 dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
+ "windows_aarch64_gnullvm 0.48.5",
+ "windows_aarch64_msvc 0.48.5",
+ "windows_i686_gnu 0.48.5",
+ "windows_i686_msvc 0.48.5",
+ "windows_x86_64_gnu 0.48.5",
+ "windows_x86_64_gnullvm 0.48.5",
+ "windows_x86_64_msvc 0.48.5",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
+dependencies = [
+ "windows_aarch64_gnullvm 0.52.6",
+ "windows_aarch64_msvc 0.52.6",
+ "windows_i686_gnu 0.52.6",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc 0.52.6",
+ "windows_x86_64_gnu 0.52.6",
+ "windows_x86_64_gnullvm 0.52.6",
+ "windows_x86_64_msvc 0.52.6",
 ]
 
 [[package]]
@@ -2458,38 +2858,106 @@ version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
+[[package]]
+name = "zerocopy"
+version = "0.7.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.7.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.39",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 32fa4a0..abd4557 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,6 +22,8 @@ serde = "1.0"
 askama = "0.12.1"
 structopt = "0.3.21"
 futures-util = "0.3.12"
+lettre = "0.11.7"
+anyhow = "1.0.86"
 
 [dependencies.async-std]
 version = "*" # Use whatever tide uses.
diff --git a/src/mail.rs b/src/mail.rs
new file mode 100644
index 0000000..04a15b7
--- /dev/null
+++ b/src/mail.rs
@@ -0,0 +1,59 @@
+use std::collections::HashSet;
+
+use anyhow::Result;
+use lettre::message::header::ContentType;
+use lettre::message::Mailbox;
+use lettre::transport::smtp::authentication::Credentials;
+use lettre::{Message, SmtpTransport, Transport};
+use std::env;
+
+pub fn send_notification(
+    recipient: &str,
+    branches: &HashSet<String>,
+    pr_number: &str,
+    pr_title: &str,
+    last: bool,
+) -> Result<()> {
+    let mut body = format!(
+        "This is your friendly neighbourhood pr-tracker.\n\
+        PR Number {pr_number} titled: \"{pr_title}\" has reached:\n\
+        {:#?}\n",
+        branches
+    );
+    if last {
+        body += "This is the last update you will get for this pr.\n\
+        Thx for using this service\n\
+        Goodbye";
+    }
+    let sending_address = env::var("PR_TRACKER_MAIL_ADDRESS")?;
+    let sending_user = match env::var("PR_TRACKER_MAIL_USER") {
+        Ok(address) => address,
+        _ => sending_address.clone(),
+    };
+    let sending_passwd = env::var("PR_TRACKER_MAIL_PASSWD")?;
+
+    let sending_server = env::var("PR_TRACKER_MAIL_SERVER")?;
+
+    let email = Message::builder()
+        .from(format!("PR-Tracker <{}>", sending_address).parse()?)
+        .to(Mailbox::new(None, recipient.parse()?))
+        .subject(format!(
+            "PR-tracker: {pr_number}: {pr_title} has reached {:?}",
+            branches
+        ))
+        .header(ContentType::TEXT_PLAIN)
+        .body(body)?;
+
+    let creds = Credentials::new(sending_user.to_string(), sending_passwd.to_string());
+
+    // Open a remote connection to gmail
+    let mailer = SmtpTransport::relay(&sending_server)?
+        .credentials(creds)
+        .build();
+
+    // Send the email
+    mailer.send(&email)?;
+
+    println!("Email sent successfully!");
+    Ok(())
+}
diff --git a/src/main.rs b/src/main.rs
index 5d5ea53..d489986 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,6 +4,7 @@
 
 mod branches;
 mod github;
+mod mail;
 mod nixpkgs;
 mod systemd;
 mod tree;
@@ -32,6 +33,7 @@ use structopt::StructOpt;
 use tide::{Request, Response};
 
 use github::{GitHub, PullRequestStatus};
+use mail::send_notification;
 use nixpkgs::Nixpkgs;
 use systemd::{is_socket_inet, is_socket_unix, listen_fds};
 use tree::Tree;
@@ -173,8 +175,12 @@ async fn update_subscribers<S>(_request: Request<S>) -> http_types::Result<Respo
                 println!("the pr is merged in: {:#?}", current);
                 for f in read_dir(dir_path.clone())? {
                     let file_path = f?.path();
-                    let file_name = file_path.file_name().and_then(|x| x.to_str()).unwrap();
-                    if file_path.is_file() && re_mail.is_match(file_name) {
+                    let file_name = file_path
+                        .file_name()
+                        .and_then(|x| x.to_str())
+                        .unwrap()
+                        .to_owned();
+                    if file_path.is_file() && re_mail.is_match(&file_name) {
                         println!("{} has received notifications for:", file_name);
                         let file = File::open(file_path)?;
                         let reader = BufReader::new(file);
@@ -182,6 +188,13 @@ async fn update_subscribers<S>(_request: Request<S>) -> http_types::Result<Respo
                         println!("{:#?}", val);
                         let to_do = &current - &val;
                         println!("You will be notified for: {:#?}", to_do);
+                        let _ = send_notification(
+                            &file_name,
+                            &to_do,
+                            page.pr_number.as_ref().unwrap(),
+                            page.pr_title.as_ref().unwrap(),
+                            !remaining,
+                        );
                     }
                 }
                 if !remaining {