Much more important than shiny new UI, what I'd like to see is seamless out-of-the-box syncing with online calendars and contacts. (At one point, I tried all the available add-ons for syncing with Google's apps; none of those add-ons worked well for me.)
Importantly, since this is a Mozilla project, that service should be self-hostable [1] to disintermediate the multi-device synchronization platform. It should not be necessary to have a third-party observe all my contacts and calendars.
If Mozilla ever were to offer a paid calendar-and-contacts online service, powered by open-source code, and backed with strong customer/data/privacy protections, I would sign up.
No need for Mozilla to make server software for this; Thunderbird/Lightning do CalDav and CardDav just fine, right? Seems that cs702's problem isn't with Thunderbird, it's with Google supporting CalDav and CardDav for sync.
If you want to self host, just host any CalDav or CardDav server software.
Thunderbird does not support carddav. Contacts + Thunderbird is generally a terrible experience. I switched to Zoho’s webmail because of this (at least I can get bidirectional sync to my iPhone).
Since this is a mozilla project it should buy a proprietary service for an undisclosed amount of money and force it down the throat of everybody with no option to self host (pocket).
And this should happen to avoid using an already available open source project that works well and you can self host (wallabag).
This a thousand times. Thunderbird would have been great if it calendared well with exchange. As it stands, the available support is garbage and barely works when it works at all.
Much more important than shiny new UI, what I'd like to see is seamless out-of-the-box syncing with online calendars and contacts. (At one point, I tried all the available add-ons for syncing with Google's apps; none of those add-ons worked well for me.)