A particular domain is blocked in your BT Mail, which is the reason the important emails from a client are not showing in your inbox. You have checked everywhere but have not been able to find that email. So, what you need to do now is unblock the domain.  It is easy to unblock a domain in BT Mail. Here are the instructions that you need to follow:  Open your web browser, and go to the official website of BTinternet.  Now, click the My BT option in the top menu bar, then clic