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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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I'm glad they have it but adding EWS support at the end of 2025 is nothing to brag about. EWS came with Exchange 2007, almost 20 years ago!
Yay! Now do Windows and Syslog, or windows and SNMP.
Yeah but it looks like this includes support for organization Office 365 accounts, so it's not just something that only worked 20 years ago. If it only supported outdated Exchange servers that would be one thing, but it seems to support modern ones.
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The only Exchange server that ISN'T outdated at this point is the 4 month old Exchange Server Subscription Edition.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.
Microsoft announced a while back that the end of EWS is coming for exchange online which means M365 accounts. They will start blocking EWS requests from October next year and only support access via Graph API. I understand the Thunderbird team are also working on Graph API support.
EWS EOL
Yep, but still better than never 🤷♂️. I was really looking forward to it as I recently migrated from Windows to Linux only to find out that it doesn't work for me for some reason.