Can set message id

Cargo.lock

@@ -112,6 +112,12 @@ version = "2.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1b8e56985ec62d17e9c1001dc89c88ecd7dc08e47eba5ec7c29c7b5eeecde967"
 
+[[package]]
+name = "bumpalo"
+version = "3.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46c5e41b57b8bba42a04676d81cb89e9ee8e859a1a66f80a5a72e1cb76b34d43"
+
 [[package]]
 name = "cc"
 version = "1.2.27"
@@ -474,6 +480,16 @@ version = "1.70.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7943c866cc5cd64cbc25b2e01621d07fa8eb2a1a23160ee81ce38704e97b8ecf"
 
+[[package]]
+name = "js-sys"
+version = "0.3.77"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1cfaf33c695fc6e08064efbc1f72ec937429614f25eef83af942d0e227c3a28f"
+dependencies = [
+ "once_cell",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.5.0"
@@ -538,6 +554,7 @@ dependencies = [
  "lettre",
  "tracing",
  "tracing-subscriber",
+ "uuid",
 ]
 
 [[package]]
@@ -770,6 +787,12 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "rustversion"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a0d197bd2c9dc6e53b84da9556a69ba4cdfab8619eb41a8bd1cc2027a0f6b1d"
+
 [[package]]
 name = "schannel"
 version = "0.1.27"
@@ -1040,6 +1063,17 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
 
+[[package]]
+name = "uuid"
+version = "1.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3cf4199d1e5d15ddd86a694e4d0dffa9c323ce759fea589f00fef9d81cc1931d"
+dependencies = [
+ "getrandom",
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "valuable"
 version = "0.1.1"
@@ -1073,6 +1107,64 @@ dependencies = [
  "wit-bindgen-rt",
 ]
 
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1edc8929d7499fc4e8f0be2262a241556cfc54a0bea223790e71446f2aab1ef5"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "rustversion",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f0a0651a5c2bc21487bde11ee802ccaf4c51935d0d3d42a6101f98161700bc6"
+dependencies = [
+ "bumpalo",
+ "log",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fe63fc6d09ed3792bd0897b314f53de8e16568c2b3f7982f468c0bf9bd0b407"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ae87ea40c9f689fc23f209965b6fb8a99ad69aeeb0231408be24920604395de"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a05d73b933a847d6cccdda8f838a22ff101ad9bf93e33684f39c1f5f0eece3d"
+dependencies = [
+ "unicode-ident",
+]
+
 [[package]]
 name = "winapi"
 version = "0.3.9"

Cargo.toml

@@ -7,4 +7,5 @@ edition = "2024"
 clap = { version = "4.5.40", features = ["derive"] }
 lettre = { version = "0.11.17", features = ["tracing"] }
 tracing = "0.1"
-tracing-subscriber = "0.3.19"
+tracing-subscriber = "0.3.19"
+uuid = { version = "1.17.0", features = ["v4"] }

src/main.rs

@@ -1,6 +1,6 @@
 use clap::Parser;
+use lettre::message::header::{ContentType, MessageId};
 use lettre::message::Mailbox;
-use lettre::message::header::ContentType;
 use lettre::transport::smtp::authentication::Credentials;
 use lettre::transport::smtp::extension::ClientId;
 use lettre::{Message, SmtpTransport, Transport};
@@ -66,6 +66,10 @@ struct Args {
     /// Relay name
     #[arg(long, default_value = "my-computer.com")]
     smtp_relay_name: String,
+
+    /// Include message id
+    #[arg(long)]
+    message_id: bool,
 }
 
 fn main() {
@@ -79,9 +83,7 @@ fn main() {
         // completes the builder.
         .finish();
 
-    tracing::subscriber::set_global_default(subscriber)
-        .expect("setting default subscriber failed");
-
+    tracing::subscriber::set_global_default(subscriber).expect("setting default subscriber failed");
 
     let mut builder = Message::builder();
     builder = builder.from(Mailbox::new(
@@ -95,6 +97,14 @@ fn main() {
         ));
     }
 
+    if args.message_id {
+        builder = builder.header(MessageId::from(format!(
+            "<{}@{}>",
+            uuid::Uuid::new_v4().to_string(),
+            args.from_mail.rsplit_once('@').unwrap().1
+        )));
+    }
+
     builder = builder
         .to(Mailbox::new(
             args.to_name.clone(),
@@ -132,7 +142,6 @@ fn main() {
     }
 }
 
-
 #[cfg(test)]
 mod test {
     use crate::Args;
@@ -141,4 +150,4 @@ mod test {
         use clap::CommandFactory;
         Args::command().debug_assert()
     }
-}
+}