You received the same reply on this thread.
Talk to TOOB, nothing to do with BT.
Of course they do.
I've merged the thread with previous one to keep the conversation and advice in one place, as it's a unique query.
@David_W102 You've received great advice from @licquorice to follow.
I'm concerned you keep being pushed back to us by your new provider, so I've raised this with our email team to trace and confirm the best steps to take.
Once I hear back I'll let you know.
Ali
HI @David_W102
Our email team have suggested it may be a client/account configuration issue rather than being only provider related.
Can you check the email you're using are configured to use SMTP authentication, and the password is correct- some versions of Thunderbird may gain multiple outbound/outgoing SMTP server configurations.
Please remove any duplicate/unwanted SMTP configurations and check the remaining ones are correct.
Please let me know how you get on, or if all the settings are correct but continue facing a slow sending response.
Which date did you move over to Toob?
Ali