When will an ESR version of Thunderbird with Microsoft Graph support be available
I have had messages about EWS support being ended from 1st October from the Beonex ExQuilla Add-On which I have been using for many years.
So I installed Beonex's new Owl Add-On which supports Microsoft Graph Protocol and migrated my Email accounts. However, this just renamed my existing account with "Old" at the end and created new ones which cannot connect!
The IT provider for the Email Domain will not allow the Owl Beonex App to connect, despite the ExQuilla one being used for many years!
They have now pointed out that Thunderbird natively supports the Microsoft Graph Protocol from Release 154. BUT I am on the ESR channel (as I need stable Email handling) and the latest ESR Release is 153.4.0esr!
So when will an ESR be released with Graph Support, as Microsoft could stop me being able to receive and send Emails any day as it is now past 1st October???? - Please let me know your timeline for the next ESR with Graph support A.S.A.P.
I do not want to install a non-ESR as I see that the latest Release 157.0.1 fixed a bug with the Graph protocol and 155.0 streamlined the manual account configuration. So I want stick with stable releases!
Also, do I have to add new accounts to use Microsoft Graph, or can I just change the configuration of my existing ones?
If the former, then I guess once I am happy I have all old Emails available (as I rely on Emails going back many years!), I can delete the original Accounts from Thunderbird, including the non-working " Old" ones created by the ExQuilla to Owl migration????
Thanks
Wšě wotmołwy (7)
153 esr does not and will not support Microsoft Graph Protocol. You'll have to migrate to 154 and up to use M.G.P.
https://blog.thunderbird.net/2026/09/thunderbird-desktop-new-protocol-support-microsoft-graph-api/
Michel, thanks for replying.
However, as per my question, I know that MGP is not available before release 154.
What I am asking is when will there be an ESR release that includes MGP?
I really would prefer to stick with stable ESR releases, but if it will take too long may have to install a non-ESR release whilst I am waiting if EWS access to my Email accounts is stopped by Microsoft!
Supplementary question - If I do need to use a non-ESR release, which would be most stable? - Given that 157.0.1 has a bug fix relevant to Graph, I am guessing that at least that release????
Thunderbird ESR adds new feature(s) only once a year. If MGP will be added it would be added likely in July 2027.
Wot Michel T změnjeny
Michel
Thank you - Can someone from the Mozilla Thunderbird Development Team or Management confirm if that is correct?
I understand that Microsoft have begun stopping support for EWS as of 1st October, so to keep my Thunderbird Emails working I want to change to Graph (Microsoft Graph Protocol = MGP).
I cannot believe that it will take Mozilla until next July to have an ESR release that supports MGP!
Especially as release 154.0 from 30th August includes "Microsoft Graph enabled for Microsoft 365".
How long notice have Microsoft given of the discontinuation of EWS support in favour of MGP?
Thanks
Michel is telling you the truth. Mozilla prefers that you use the latest release so you will get the latest updates, but the ESR is for those needing a more stable release. Major features are added to ESR each summer. If you need the feature, you should consider changing to the release channel.
Michel is correct.
ESR for both Firefox and Thunderbird do not get major new features during their lifetime as has been the practice for over a decade. Therefore Graph will not appear in Thunderbird ESR version 153. The next ESR version is summer 2027, where Graph will be supported.
If you must move to Graph now, your only choice in Thunderbird is to use the release channel, currently version 157. Then next summer if you wish you can switch back to ESR.
Wot Wayne Mery změnjeny
Henry said
I cannot believe that it will take Mozilla until next July to have an ESR release that supports MGP! Especially as release 154.0 from 30th August includes "Microsoft Graph enabled for Microsoft 365". How long notice have Microsoft given of the discontinuation of EWS support in favour of MGP?
Thunderbird 153.0 ESR is based on the now old Thunderbird 153.0 Release with minor updates only being for security and or stability fixes. No new features that are in Tb 154.0 or later are added.
So the Tb 153.0 ESR only has the features that the Tb 153.0 Release had.
ESR whether as Thunderbird or Firefox tends to be more for Enterprise users in mind who need longer term stability and not deal with issues with rapid release versions.
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