How to delete emails in Horde?
Usually during removal of letters in the application of the Horde web mail they become crossed out and remain in the Entering folder. To remove letters press a gear from above on the panel, choose "Preferences" and "Mail":
Then click on the link "Deleting and Moving Messages":
On the open page establish the mark "Move deleted messages to your Trash mailbox instead of marking them as deleted in the current mailbox?" that allows to move letters to a basket during removal, and press "Save":
After that you will be able to configure the storage of the storage of deleted messages: