I have a group defined. I have scheduled a series of emails to go out to the group. When I signed up, it was my understanding that by using a group, the future emails would go to the people listed in the group at the scheduled sending time. However, I've been experimenting with this and the emails are sent out only to the group that existed at the time I created the email. When I added a new person to the group, they did NOT receive the email that went out after they were added. Help!

Your initial understanding is correct. The people that will receive your email are the members of the group at the time of delivery, not at the time the email was created.

Check your group again, make sure that you've got everyone in the list that you think you do.

I have double and triple checked the group. When I click on the group name, the names in the group are auto checkmarked & highlighted yellow. The names and addresses are all there and good (I'm using some of my own to test the system). This problem is still ongoing.

If you are not receiving emails, check the spam folder. Sometimes email programs will be more suspicious of email from yourself, to yourself. Once you mark it as "not spam" it should stop happening.

The resolution for this was to switch from Firefox to IE when making the changes to group lists. Since doing the work from within IE, the changes are being registered and the proper recipients are getting the emails. Go figure!