LibreOffice does not have an email client component like other office suites do (e.g. MS Office with Outlook).
Thunderbird is the default Open Source client for many. Having smooth interoperability and improved integration between the two is important.
In 2023, both projects have expressed their desire to work more closely. See for example:
- https://mastodon.online/@thunderbird/110100617344411426 (archived: https://web.archive.org/web/https://mastodon.online/@thunderbird/110100617344411426)
- https://fosstodon.org/@libreoffice/110150592222353571 (archived: https://web.archive.org/web/https://fosstodon.org/@libreoffice/110150592222353571)
This meta bug can be used to track bugs and enhancements related to how LibreOffice and Thunderbird (+ forks like Betterbird) interoperate.
Thunderbird tickets with "LibreOffice" in the summary: https://bugzilla.mozilla.org/buglist.cgi?query_format=specific&order=relevance+desc&bug_status=__open__&product=Thunderbird&content=LibreOffice&comments=0