Updated 1st March 2017
To understand this post, you might need to read my article Understanding E-Mail Settings
If you want to use a non-BT e-mail address (for example a Freeserve address, or maybe you have your own domain name) with your BT mail service, see my pages here.
BT has (at least) three different mail services. Your first challenge is to find out which one you use.
If your BT email address ends with:
- @btconnect.com you are a BT business customer.
- @btinternet.com or @btopenworld.com you are a BT residential customer.