You can set up your account manually in eM Client in a few simple steps.

1.        Go to Menu > Accounts and click the button ‘+Add Account’.
2.        Skip the Automatic Setup option, click on Mail and select ‘Other’ from the menu that appears.
3.        Click ‘Next’ to proceed with the manual configuration of your account and then simply follow the instructions.

Note: If you want to specify the port during the initial setup, simply add a colon and the port number directly after the server URL. Example: mail.domain.com:993

Read more in the Documentation: Create New Account