Getting started with BT: We have some great help to get you started with your BT services, check out this link, New to BT

BT Yahoo Mail help
You can browse help articles on the most common BT Yahoo problems from this link, Help with common BT Yahoo Mail problems

BT Mail help
You can browse common help articles for BT Mail via this link, Help with BT Mail

BT email postmaster
If you have any difficulty in sending email to a BT mail address or BT Yahoo mail address then it would be best to contact the postmaster team. Here are two links with some useful information as to how to contact the postmaster team. For BT Mail please see Best practices for postmasters and for BT Yahoo Mail please see Yahoo postmaster team