Users can manually add their IMAP or POP3 existing account/s to Aqua Mail using the "Other" login form.
To add open Aqua Mail>Select "Other" login option> Enter a valid username and password> Tap "Manual setup" >Edit your details to match your server request (hostname/ port/ connection) > Tap the "Add Account" button
If everything is executed correctly your account adding should look similar to the attached video.