#email-client #user-email #client #client-send #library


This is library that provides user with easy to use email clients collection in rust

2 unstable releases

0.2.0 Apr 28, 2024
0.1.0 Apr 26, 2024

#3 in #user-email

MIT license

564 lines

Email Clients for rust

Crates.io Documentation


This provides user with easy to use email clients collection in rust. You can choose one or more of the email client and use this library to send emails easily.


  • Terminal client for local development
  • Memory client for test cases
  • SMTP client with tls and starttls, local support
  • Mailersend configuration
  • Easy configuration management


You can add this library to your project using

$ cargo add email_clients


For quick start, you can do the following: Based on the email client you want to support, you need to initialize email configuration as below:

async fn send_email() {
    let email = EmailObject {
        sender: "test@example.com",
        to: vec![EmailAddress { name: "Mail".to_string(), email: "to@example.com".to_string() }],
        subject: "subject".to_string(),
        plain: "plain body".to_string(),
        html: "<a>html body</a>".to_string(),
    // Choose any of the config as below:
    // 1. Terminal client (needs terminal feature, enabled by default)
    let terminal_config: TerminalConfig = String::from("me@domain.com").into(); // Terminal config
    // 2. Smtp config (needs smtp feature)
    let smtp_config = SmtpConfig::default().sender("sender@example.com").relay("localhost");
    // 3. Memory config (needs memory feature)
    let (tx, rx) = mpsc::sync_channel(2);
    let memory_config = String::from("me@domain.com").into();
    let email_configuration: EmailConfiguration = terminal_config.into(); // OR any of the other config
    let client = get_email_client(email_configuration);
    // For memory config, if you want to retain the receiver, you can do so using:
    let memory_client = EmailClient::Memory(MemoryClient::with_tx(memory_config, tx));


The tests here needs an open mail server listening locally on port 2525. You can do so using:

$ python -m smtpd -n -c DebuggingServer


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