How are you deleting messages? Move to Deleted, Delete Immediately, Hide?
How soon do they re-appear (instantly, after next mail check, next day)?
If it's a POP3 account, and there are more than a few dozen messages in the app's Deleted folder, then please long press it and choose "Delete All", this will purge those messages from the server.
However:
If this is your v..net account, the preset for this mail provider in AquaMail is IMAP.
And so please check that the app's Deleted folder is properly "mapped" to a server folder.
- Long press the account
- Options and Folders
( at this point you'll see either POP3 Options or IMAP Options which will tell you how the account is set up in AquaMail )
- Tap into Folders (if it's IMAP)
- Let it refresh
- Find the server side Deleted folder ("Bin", "Trash", "Deleted Items", "Deleted Messages", whatever it's called)
- Tap the folder name, choose "Sync with Deleted"