Whenever a user tries to register to participate in the forums, they are told:

Registration complete. Please check your email.

Registration is approved by CleanTalk.

As administrator, I then receive an email confirming that a new user has registered and I can see that user in the system. However, they never receive the promised e-mail to complete the registration process. I’ve tried this myself and can confirm there is no e-mail being sent using an e-mail address that I know to work). It isn’t being received and put into a SPAM folder either.

Is this a known issue? Is there a known solution?

[@robin-w Moderator 7 years, 10 months ago]

this is all handled by wordpress and presumably cleantalk. bbpress just uses what wordpress has. Suggest you post on the wordpress/cleantalk support sites