Reply To: Members not able to email other groups Home › Forums › Front End PM PRO › Members not able to email other groups › Reply To: Members not able to email other groups February 1, 2019 at 5:00 am #21185 Shamim HasanKeymaster Group slug is case sensitive. make sure you have used same group slug as you set in group settings page. I think it will be $user_groups['instructors'] = 'Instructors';