Stub Transport

The stub transport only logs message envelope and drops the content. It can be useful for testing purposes.

extern crate lettre;

use lettre::stub::StubEmailTransport;
use lettre::{SimpleSendableEmail, EmailTransport};

fn main() {
    let email = SimpleSendableEmail::new(
                    "user@localhost".to_string(),
                    &["root@localhost".to_string()],
                    "message_id".to_string(),
                    "Hello world".to_string(),
                ).unwrap();

    let mut sender = StubEmailTransport::new_positive();
    let result = sender.send(&email);
    assert!(result.is_ok());
}

Will log (when using a logger like env_logger):

b7c211bc-9811-45ce-8cd9-68eab575d695: from=<user@localhost> to=<root@localhost>

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