Setup is straight-forward at first. If you’re adding a new account, enter your user and server settings as normal.

By default Outlook Express won’t use the Sent folder for your sent mail; it will still go to the local Sent Items folder. To fix this, do the following:

1. Go to Tools > Accounts > Properties (for the applicable account) > IMAP
2. Enter “INBOX.” (note the trailing dot) as the Root Folder Path, and change “Sent Items” to just “Sent”.