This tool is specifically for website hosted with us, email and dns hosted externally, and want to use webapp to send email through our mail system.
1. Ensure that in cpanel, email routing is set to Remote
2. Create email account with a passworrd and keep it
3. Login to webapp to configure SMTP to send out email from the server using localhost as the server name, port 25, no SSL/TLS/STARTTLS, full email address as username and the created password as per step 2
4. Ensure that you see Green for the 2 records below
5. Do a mail test from your webapp, could be contact us form, or account sign up, or order