Available on crate feature
file-transport
only.Expand description
The file transport writes the emails to the given directory. The name of the file will be
message_id.eml
.
It can be useful for testing purposes, or if you want to keep track of sent messages.
§Sync example
use std::env::temp_dir;
use lettre::{message::header::ContentType, FileTransport, Message, Transport};
// Write to the local temp directory
let sender = FileTransport::new(temp_dir());
let email = Message::builder()
.from("NoBody <nobody@domain.tld>".parse()?)
.reply_to("Yuin <yuin@domain.tld>".parse()?)
.to("Hei <hei@domain.tld>".parse()?)
.subject("Happy new year")
.header(ContentType::TEXT_PLAIN)
.body(String::from("Be happy!"))?;
sender.send(&email)?;
§Sync example with envelope
It is possible to also write the envelope content in a separate JSON file
by using the with_envelope
builder. The JSON file will be written in the
target directory with same name and a json
extension.
use std::env::temp_dir;
use lettre::{message::header::ContentType, FileTransport, Message, Transport};
// Write to the local temp directory
let sender = FileTransport::with_envelope(temp_dir());
let email = Message::builder()
.from("NoBody <nobody@domain.tld>".parse()?)
.reply_to("Yuin <yuin@domain.tld>".parse()?)
.to("Hei <hei@domain.tld>".parse()?)
.subject("Happy new year")
.header(ContentType::TEXT_PLAIN)
.body(String::from("Be happy!"))?;
sender.send(&email)?;
§Async tokio 1.x
use std::env::temp_dir;
use lettre::{
message::header::ContentType, AsyncFileTransport, AsyncTransport, Message, Tokio1Executor,
};
// Write to the local temp directory
let sender = AsyncFileTransport::<Tokio1Executor>::new(temp_dir());
let email = Message::builder()
.from("NoBody <nobody@domain.tld>".parse()?)
.reply_to("Yuin <yuin@domain.tld>".parse()?)
.to("Hei <hei@domain.tld>".parse()?)
.subject("Happy new year")
.header(ContentType::TEXT_PLAIN)
.body(String::from("Be happy!"))?;
sender.send(email).await?;
§Async async-std 1.x
use std::env::temp_dir;
use lettre::{
message::header::ContentType, AsyncFileTransport, AsyncStd1Executor, AsyncTransport,
Message,
};
// Write to the local temp directory
let sender = AsyncFileTransport::<AsyncStd1Executor>::new(temp_dir());
let email = Message::builder()
.from("NoBody <nobody@domain.tld>".parse()?)
.reply_to("Yuin <yuin@domain.tld>".parse()?)
.to("Hei <hei@domain.tld>".parse()?)
.subject("Happy new year")
.header(ContentType::TEXT_PLAIN)
.body(String::from("Be happy!"))?;
sender.send(email).await?;
Example email content result
From: NoBody <nobody@domain.tld>
Reply-To: Yuin <yuin@domain.tld>
To: Hei <hei@domain.tld>
Subject: Happy new year
Content-Type: text/plain; charset=utf-8
Date: Tue, 18 Aug 2020 22:50:17 GMT
Be happy!
Example envelope result
{"forward_path":["hei@domain.tld"],"reverse_path":"nobody@domain.tld"}
Structs§
- Async
File Transport tokio1
orasync-std1
- Asynchronously writes the content and the envelope information to a file
- Error
- The Errors that may occur when sending an email over SMTP
- File
Transport - Writes the content and the envelope information to a file