Email crates for Rust: lettre and imap

Rust's current capabilities for handling emails are limited, particularly in the context of asynchronous programming, which is crucial for modern web applications. The most popular crate for sending emails in Rust is "lettre," but its latest stable version lacks async/await support, though an alpha version with async features is available. For sending emails synchronously, lettre provides robust support, with examples demonstrating how to create and send emails using different transports like SMTP. However, for receiving and managing emails, the "imap" crate is recommended, although it also does not support async operations. Rust's ecosystem is still developing in terms of comprehensive email handling, making it less ideal for applications heavily reliant on email functionalities, especially those requiring asynchronous operations. Despite these limitations, Rust's web ecosystem is strong, and improvements in email support are anticipated. For now, developers may consider using other languages for email-intensive applications, while leveraging Rust's strengths for other aspects of app development.