I have changed my BT mail password and now EM Client will not send or receive, it did before I changed it.
The email works fine server side at the BT site, and EM works OK with another account.
And before you ask I have changed the password on EM Client as well.
I have Googled this and it seems to be common problem, but so far I can’t fix it.
You do not say if you use Windows 10 or 11 and version of eMC, also if IMAP or POP3 with or without 2FA so here are two links to BT Mail
When I am in UK I use separate laptop with BT ISP not their mail but have no problems
Then you will need to contact the email provider, as there is either a server issue, or an issue with your account. Or it could even be they require you to use an app password and not the account password.
If you set the correct username and password in the General tab then the other two tabs, IMAP and SMTP, should have the option set to Use Identity Credentials. That way IMAP and SMTP will use whatever you set in the General tab, so a single point of failure.