I want to use Thunderbird, but man, it's lacking some basic features. Features that used to be available via add-ons, but which stopped working somewhere around v60.

My biggest annoyances:

* Inability to easily edit the from address

-Why: I use Fastmail with 10 different custom domains and custom senders. In TB I would have to manually add in each sending domain. And TB still doesn't "remember" which -from- addresses are used by which -to- address. This used to be solved by the https://www.absorb.it/virtual-id/ . Shockingly, the Fastmail webui does have this feature.

* Inability to minimize to tray on Linux (Windows does have this feature, but that doesn't help me).

* Inconsistent notifications, sometimes you'll get one, sometimes not, who knows why.

* No easy way to tell if Thunderbird is using IMAP Push

But at least I'm glad they put an IRC client in. If there's one thing I always wanted my email client to be, it's an IRC client. (sarcasm)

> Inability to minimize to tray on Linux

Birdtray [1] works perfectly for this. I think the only thing you have to is create a .desktop file that opens birdtray that opens Thunderbird automatically.

> Inability to easily edit the from address

There is a feature for this for quite a while. In the write message window, just click the down arrow next to 'From' and either choose a pre-configured identity [2] or click "Customize From Address" which allows you to freely edit the from address.

> And TB still doesn't "remember" which -from- addresses are used by which -to- address.

Not sure what you mean, but there is a 'Reply from this identity when delivery headers match' config in account settings. I have never used it, but it allows you to automatically choose an identity when you are replying to a email from a particular address/domain.

[1] https://github.com/gyunaev/birdtray

[2] You can add many identities for each server in account settings.