Select "Setup" from your list of all programs. You may have to scroll to the far right to find this list.

Select "Email Accounts" under the list of various things you can setup.

When prompted for what kind of email account select "Internet Mail Account."

Select "Set up another email account".

Select "Other"

Enter your email address and password.

There is an option here to "show password" if you are uncertain of your texting abilities.

This should bring you to a confirmation screen

with the option to setup Signature and Settings.

Choose "Change Settings" from this screen.

Under "Advanced Options" you can enter your Email Server, which is mail.domain.tld,

your email server type which should be IMAP

and your port which should be 143 by default. Disable "use SSL" if it is not already.

Hit "Save".