Hi, @michelle-barboza – Good questions!
A ‘daily email digest’ feature (for Groups) is coming soon. Our web developers have tested it out and I expect it to “go live” this week. That should handle your question re: Groups.
For forums, you should “follow” each forum you are interested in. This will enable you to receive notifications when anyone posts in the forums you follow. Just click on the forum you’re interested in and on the first ‘page,’ there will be a brown link that says “Follow” in the upper right hand corner (under your profile picture). That should handle your question re: Forums.