I don't know if this is still an issue but have you checked Tools & Settings -> Mail Server Settings -> and verified that "Enable mail management functions in Plesk" is checked? I ran into this problem today and found that it was NOT checked.
Enjoy!
I don't know if this is still an issue but have you checked Tools & Settings -> Mail Server Settings -> and verified that "Enable mail management functions in Plesk" is checked? I ran into this problem today and found that it was NOT checked.
Enjoy!