There is no incentive for existing email providers to adopt new standard. They w...

jeffbee · on May 30, 2023

You can cry conspiracy all you want, but the fact is that even Thunderbird, the flagship open-source email client, does not support JMAP.

commoner · on May 30, 2023

To anyone interested in bringing JMAP support to Thunderbird, the Bugzilla bug is here:

- Add support for new JMAP protocol: https://bugzilla.mozilla.org/show_bug.cgi?id=1322991

There's also Ltt.rs, a free and open source JMAP email client for Android:

- Ltt.rs source code: https://codeberg.org/iNPUTmice/lttrs-android

- Ltt.rs on F-Droid: https://f-droid.org/en/packages/rs.ltt.android/

toomuchtodo · on May 30, 2023

Can one donate specifically to Thunderbird to implement JMAP?

commoner · on May 30, 2023

I don't think so, but you can ask Thunderbird if they are willing to earmark your donation for JMAP specifically:

> Who can I email directly with questions about giving?

> If you have a question about giving to Thunderbird, please contact us via this form. We will do our best to follow-up with you as soon as we can. If you need technical support, please head over to Thunderbird Support for assistance.

https://www.thunderbird.net/en-US/donate/

You can also try contacting the developer who offered to work on JMAP integration for pay:

> I can't commit to a project of this size however since I work freelancing and my availability is fluid. I am open to being sponsored/contracted in order to do this as part of my job.

https://bugzilla.mozilla.org/show_bug.cgi?id=1322991#c23

mildred593 · on May 31, 2023

What would be the benefit to using JMAP in thunderbird?

JMAP main benefit is that it allows a mail client to to things efficiently in JMAP that are extremely difficult to do in IMAP or take a long time to do. Merely adding JMAP support in Thunderbird will not add any benefit.

The benefit will come if Thunderbird is refactored internally to make use of the nice properties of JMAP, but then there will be a problem with IMAP compatibility which must be kept.

JMAP is nice for new mail clients that can move away from a folder-centric paradigm, but if you already managed to use IMAP then it's less useful.