Add support for sub-tasks in Thunderbird

[Ponda]

Thunderbird can act not only as a mail client, but also calendar, address book, tasks app and more, which gives new productivity opportunities – for example, you can very easily convert an e-mail into a task or event. One of the things Thunderbird currently lacks, however, is support for sub-tasks/hierarchical to-do. Let me show you this amazing feature on an example (using Nextcloud Tasks):

On Bugzilla, this feature was requested 21 years ago: https://bugzilla.mozilla.org/show_bug.cgi?id=194863

There are no good desktop apps supporting caldav and sub-tasks that I'm aware of, and the only such app for Android is Tasks.org. In addition, it seems Thunderbird already supports necessary attribute: https://github.com/Betterbird/thunderbird-patches/issues/79#issuecomment-1465267112

[Kultos]

Cant wait to see a release for this. Just started using the caldav protocol recently for my families shared lists to escape the cloud. And I could not believe Thunderbird does not support this already. Glad to her its about to come.

[YasminF]

Any update on when subtasks will be available / released?  Would love to begin using Thunderbird but am unwilling to do so without subtasks. 

[uu1234]

The Thunderbird PM provided an update on Mastodon:

Q: Any updates on this? 🙂

A: not in the next ESR (due out in August-ish). Not sure exactly when, trying to figure out what all should happen in the Tasks section, as it is long overdue for some love.

April 17, 2024 at 10:59:49 PM

https://mastodon.social/@ryanleesipes/111166670751517372

[uu1234]

The Thunderbird PM has provided an update on the timeline on Mastodon:

"not in the next ESR (due out in August-ish). Not sure exactly when, trying to figure out what all should happen in the Tasks section, as it is long overdue for some love."

https://mastodon.social/@ryanleesipes/112288569087269599

[n0w0rk]

Please consider the new caltext-task draft[1] in the redesign. Would be a shame if there was major work in redesigning only to just miss the new features.

[1]: https://datatracker.ietf.org/doc/draft-ietf-calext-ical-tasks/

[garlicOS]

Also joined just to upvote this idea. Sub-tasks are a must-have for me in any tasks app.

[phpunderdog]

hi,
yes, please, integrate the "sub-tasks" function.
thank you!

[Otoro]

Great news!
Please make sure this works well with tasks and sub-tasks created with the following apps:
* tasks.org (https://tasks.org/)
* jtxboard (https://jtx.techbee.at/)

[unonweb]

It would be awesome to see this in Thunderbird. I've just donated 20€ to contribute a very litte bit 🙂

[Foxy_Feeks]

Thanbk you for suggesting this! I am so happy with Thunderbird being able to sync my calendar and tasks via CalDav. Works seamlessly with my android devices and NextCloud. It would make such a big difference if I could use subtasks, as I am also using tasks.org on my phone.