This is huge... All actions you perform on the desktop (mark as spam, archive, delete, etc.) give you a notification telling you what you did and an option to undo. Mobile apps should do the same thing :)

Totally agree.
i sometimes accidentally swipe to delete then can't just click 'undo' on the banner at the bottom.

On the mobile app you can swipe on an email to do an action, however if you accidently swipe something away there is no undo button (for Android at least). You have to go search for the email then long press, then move back to the correct folder.

There should be an undo button on the toast that pops up to undo the action.

100%. Worse yet, sometimes I don't even know what email i deleted and it's not worth going through the entire trash to figure it out. Especially when conversations aren't grouped in andoid app (a separate critical issue).

The worst is that we had this previously. It was removed for god know what reason.

This is a source of pain.

As others mention: accidental swipe, e-mail gone, and I have no idea if I just deleted something very important. No way to find it. 62 pages of trash to go through.

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!!