> For the complete documentation index, see [llms.txt](https://developer.thunderbird.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.thunderbird.net/planning.md).

# Planning

- [Roadmaps](https://developer.thunderbird.net/planning/roadmap.md): Planned work for the 2026 releases of Thunderbird products.
- [Supported Standards](https://developer.thunderbird.net/planning/standards-status.md): This list collects standards that the Thunderbird family of applications currently at least partially implements or supports (in our code base, ignoring things like TCP which we inherit from upstream