For info, I received a Discourse PM that someone sent me 1 hour ago (since this thread was created).
What might help would be to explain exactly which emails you expect to receive that you are not receiving - is it all, only some, and if so exactly which ones?
One thing that you might try is creating a test account and sending PMs from and to that to help narrow down the problem. Messaging from Discourse (and email generally) is spectacularly complicated to debug and unless someone else sees the problem I doubt that theyād be able to investigate based on what is written above.
The email address is correct and I do receive emails for public discussions. For this private discussion, I only received one email (when the user first replied) and not the other emails (for his other replies).
I did not test a second private discussion, I will try with a test account. Thank you.