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Thunderbird Adds Native Microsoft Exchange Email Support - The Thunderbird Blog
(blog.thunderbird.net)
this post was submitted on 19 Nov 2025
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Sure but as @ApeNo1@lemmy.world noted MS is ending support for EWS in M365 in less than 12 months! So it took them 18 years to release something that still doesn't fully work (no Calendaring support, WTF?) and won't even be usable by this time next year.
🤦
The only Exchange server that ISN'T outdated at this point is the 4 month old Exchange Server Subscription Edition. All other versions are now EoL and have no support. So unless you have a very particular need to keep your EX environment On-Prem then you may as well migrate to EXO.
If you are already using EXO then Thunderbird's new EWS support will stop working next October.