Teach Horde to use the Trash can
- Go to your inbox, click Options at the top.
- Choose "Deleting and Moving Messages" (in the middle).
- Put a check mark by the option "When deleting messages, move them to your Trash folder instead of marking them as deleted?"
- Under "Trash folder:" select Create a new trash folder
- Give it the name Trash and hit OK
- Click Save Options