When using Plesk, you can get your email settings by doing the following:

1. Log into Plesk.
2. Select the domain from the domains list.
3. Click on the "Mail" tab
4. Click on the "Information button" (May be a spanner or cog depening on your Plesk version) next to the email address you'd like the settings for. This will display the details you'll need to use to connect to your account.

Please also ensure you set up SMTP authentication as you will not be able to send emails if you do not.

IMAP is generally considered to be a better option than POP as this works as a direct connection to the server and and changes made will be reflected instantly on the server.

An example would be:

Protocol: IMAP

Username/Email: [email protected]

Password: Your password

Incoming mail server: mail.example.com

Port 143

Outgoing mail server: mail.example.com

Port: 25

Protocol: POP/POP3

Username/Email: [email protected]

Password: Your password

Incoming mail server: mail.example.com

Port 110

Outgoing mail server: mail.example.com

Port: 25

N.B: With a POP connection, you may want to consider enabling the option to delete mail from the server when it is deleted from the client.

Please ensure that you have SMTP authentication turned on in both instances.