In this extensive article by the developers behind Thunderbird, the discussion revolves around the upcoming native support for Microsoft Exchange within Thunderbird, set to be available in July 2024. The authors delve into the technical details of integrating the Microsoft Exchange Web Services mail protocol into Thunderbird, highlighting the challenges faced and the benefits of using Rust as the language for this project. Notably, this represents the first instance of adding support for a new mail protocol in the 20-year history of Thunderbird. The post also touches on historical context, architectural technical debt, platform support, and the importance of documentation for future developments.
https://blog.thunderbird.net/2024/04/adventures-in-rust-bringing-exchange-support-to-thunderbird/