IMAPClient 1.0.0

IMAPClient 1.0.0 is finally here! This is a monster release, bursting with new features and fixes.

Here's the highlights:

Enhanced TLS support: The way that IMAPClient establishes TLS connections has been completely reworked. By default, IMAPClient will attempt certificate verification and certificate hostname checking, and will not use known-insecure TLS settings and protocols. In addition, TLS parameters are now highly configurable.

This change necessitates that backwards compatibility has been broken, and also means that IMAPClient has a bunch of new dependencies. Please see the earlier blog article about the TLS changes as well as the release notes for more information.

STARTTLS support: When the server supports it, IMAPClient can now establish an encrypted connection after initially starting with an unencrypted connection using the STARTTLS command. The starttls method takes an SSL context object for controlling the parameters of the TLS negotiation.

Many thanks to Chris Arndt for his extensive initial work on this.

Robust search criteria handling: IMAPClient's methods that accept search criteria have been changed to provide take criteria in a more straightforward and robust way. In addition, the way the charset argument interacts with search criteria has been improved. These changes make it easier to pass search criteria and have them handled correctly.

Unfortunately these changes also mean that small changes may be required to existing code that uses IMAPClient. Please see the earlier blog article about the search changes as well as the release notes for more information.

Socket timeout support: IMAPClient now accepts a timeout at creation time. The timeout applies while establishing the connection and for all operations on the socket connected to the IMAP server.

Semantic versioning: In order to better indicate version compatibility to IMAPClient's users, the project will now strictly adhere to the Semantic Versioning scheme.

Performance optimisation for parsing message id lists: A short circuit is now used when parsing a list of message ids which greatly speeds up parsing time.

Installation via wheels: In addition to .zip and .tar.gz files, IMAPClient releases are now also available as universal wheels.

There have also been many other smaller fixes and improvements. See the release notes and manual for more details.

IMAPClient can be installed from PyPI (pip install imapclient) or downloaded via IMAPClient site.

This release couldn't have been possible with the amazing support of Nylas. If you're developing software that needs to deal with email, save yourself a whole lot of pain and check out their email platform. If you're after a modern, extensible, cross-platform email client check out N1.

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