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# File transport

The file transport writes the emails to the given directory. The name of the file will be `message_id.txt`. It can be useful for testing purposes, or if you want to keep track of sent messages.

use std::env::temp_dir; use lettre::file::FileEmailTransport; use lettre::{SimpleSendableEmail, EmailTransport, EmailAddress}; // Write to the local temp directory let mut sender = FileEmailTransport::new(temp_dir()); let email = SimpleSendableEmail::new( EmailAddress::new("user@localhost".to_string()), vec![EmailAddress::new("root@localhost".to_string())], "message_id".to_string(), "Hello world".to_string(), ); let result = sender.send(&email); assert!(result.is_ok());

Example result in `/tmp/b7c211bc-9811-45ce-8cd9-68eab575d695.txt`:

b7c211bc-9811-45ce-8cd9-68eab575d695: from=<user@localhost> to=<root@localhost> To: <root@localhost> From: <user@localhost> Subject: Hello Date: Sat, 31 Oct 2015 13:42:19 +0100 Message-ID: <b7c211bc-9811-45ce-8cd9-68eab575d695.lettre@localhost> Hello World!