So you’ve responded to the warning message about your inbox being full; you’ve spent a while deleting old messages and your Inbox is now looking much smaller. But bear in mind that those emails are now lurking in the “Trash” folder, still taking up the same amount of disk space on your server!
Here’s how to remove them completely to create the extra space you’d been hoping to gain:
1. Log into Roundcube.
2. Click/Select the “Trash” folder.
3. In the bottom left corner of the screen you will see the folder options icon.
4. Click the “Cog” icon to show the “Folder Options” menu. Then select “Empty”.