Basic and important features.

This is a must have, I'm just starting to realize how underdeveloped proton mail android app is compared to others -.-

Yes, the lack of undo has rendered the swipe actions useless, as it has now been countless times where I just barely slide my finger unintentionally and a message ends up in the trash...This may not have been terrible if deleted messages could be sorted by date deleted and not date of message. I often just see something was deleted but then don't know what or the date so it is nearly impossible to find.

gmail highlights an undo for a few seconds. Also, I feel it could just be a more solid swipe across the screen vs. just barely moving my finger.

I have been forced to just change all my swipes to star/unstar...

Super basic functionality I have on my other email accounts. It happens on protonmail pretty frequently where I swipe away an email I didn't mean to, and it was sitting in my inbox from months ago so now its lost in my Trash folder somewhere months ago

Please add this it's a quick win for the usability.

Yes!!! This is so basic, I use swipe actions a ton, but I have also accidentally deleted/archived something on accident and I have no idea what is was, I just have to comb through the trash! Definitely need an undo button!!