The "Quick Filter" toolbar (especially the tag filtering).
The calendar overview showing days with events (via a little blue dot).
The built-in contacts manager is very nice.
Customizability has been retained in this release and ... even improved.
The way the team has been communicating with & listening to the community while building Supernova.
š What can be improved:
Thunderbird icon in Windows 11 taskbar seems smaller than other icons?
The "compact" density setting feels too compact ... just a little bit more padding would be perfect.
Themes that have a dark Unified Toolbar and a light sidebar (where the folders are) have the sidebar text in white. Seems like a bug. Try the "Antimuonium" theme for example. I also tried changing the interface through CSS, but I couldn't manage to fix this issue.
Limited set of interesting and compatible add-ons? (CardBook incompatible at this moment, can't find Duplicate Contacts remover ...)
Contact manager's search field doesn't have a button to clear the search.
ā What I don't like:
The new card view is not my cup of tea (yet), but I understand the use case and luckily the tabular view is still there.
I do like the card view. The only thing that bothers me is that it's hard to distinguish between read and unread mail. At least in light view. In dark view it's a much larger color difference.
I have multiple monitors in different resolutions: 1440p for my main screen and 1080p for my side screen. I use the vertical view setting. The message preview width seems to be fixed to what you set it. This causes the message list or card view to scale to fill up the width. When I set the column widths to be good for 1440p, this will make the message list very small on 1080p. And when I set it up for 1080p, the message list becomes really wide for 1440p. So constantly keep adjusting column widths when changing the window size. Pretty annoying.
It would be a lot better if the message list and message preview pane would both scale their width to fill up the available width.