How do I configure a mail app manually?

Use the settings displayed by Plesk because server names can vary between hosting services.

Steps

1. Open Mail and select the information or mail-client setup action for the address.
2. Choose IMAP if you want messages and folders to remain synchronised across devices.
3. Enter the full email address as the username for incoming and outgoing mail.
4. Copy the incoming server, outgoing server, security method, and ports exactly as shown.
5. Enable authentication for outgoing mail and use the mailbox password.
6. Send a test message in both directions.

Do not accept an unexpected certificate warning. Recheck the server name first.