Twisted Mail software offers convenient SMTP, POP3, and IMAP4 client and server implementations.
The Twisted Mail server components are another standout feature, allowing for custom protocol-specific servers, without the need to navigate through the intricacies of protocol-level issues, making for a seamless user experience.
The project also includes a straightforward demo email server that accepts incoming email messages over SMTP, and subsequently stores them adequately in a Maildir arrangement. The messages stored can then be served to clients via POP3.
Its newest release includes some exciting features, including proper quoting of usernames and passwords, unsolicited FLAGS responses handling, and improved parsing of literals, making the IMAP4 server more responsive, with fewer errors.
A bug where Deferreds returned from IMAP4 client methods would not receive connection lost notifications has been rectified. Start-up time on OS X has been significantly improved, while the SMTP server has been significantly sped up. Furthermore, the API has been expanded to allow room for Deferreds to be returned in some situations, a highly welcome feature.
Overall, the Twisted Mail project is reliable, well-developed, and a great implementation of email protocols. Its latest release is a significant improvement, making it an even better option for users.
Version 0.3.0: N/A