I used this for a while but the fastmail web interface is actually good enough… I use thunderbird for cleaning up and deleting stuff, and organizing… There it shines.

did they fix the encryption bullshit which makes it impossible to see external content when using encryption? Therefore I have to read such emails on my android version of thunderbird facepalm deluxe

new Thunderbird now has a notification system for real-time desktop alerts

Holy dirty moly! Finally. Now my personal project can be put to read only mode. :D (nobody other than me was using it anyway)