I am looking to send a reminder email to members of several groups. The message is consistent, and I want it to be automated. The group members change as new members are added based on meeting eligibility criteria when they complete courses/learning plans. 

I don’t want them to get a notification for each course or learning plan. One reminder per user if they are a member of any of my groups, which eliminates group, course, and learning plan notifications. 

I looked at Newsletter, but it looks like a manual task every time you send, which makes sense because newsletter content changes with each issue. 

Any suggestions?