Linux - Go to Edit -> Account Settings
Windows - Go to Tools -> Account Settings
Click on "Create new account." You should see the following:

- Your name: Enter Your Name
- Email Address: Full email address (user@yourdomain.tld)
- Password: Your Password
Click "Continue," it will begin scanning, just click "Manual Config" to stop it. You should see the following:

- Incoming:
- IMAP - imap.changeip.com - 993 - SSL/TLS - Normal Password
- OR
- POP3 - pop3.changeip.com - 995 - SSL/TLS - Normal Password
- Outgoing:
- SMTP - smtp.changeip.com - 587 - STARTTLS - Normal Password
- Username:
- user@domain.tld
- user@domain.tld
Click "Done"