My daughter recently left on her mission, and we were told to set up a group mailing system before she left. I can't remember where the information came from, but the two suggested options were "tags" in her Gmail account (because she logs into her missionary.org email account through the Gmail interface), or Google Groups. We were told (and tested ourselves) that the "tags" option wouldn't work from a mobile device, because the mobile Gmail app doesn't have tag functionality. So we set up the Google Groups. Unfortunately, when I tried to give my daughter's missionary.org email address the permission to send to the group, the page says "Web posting has been disabled for this member by their domain administrator." Is that a decision at the Church headquarters level? I don't see any way to override it on the individual user level.
So I'm wondering what other parents have done to solve this problem. The options I can see at this point are to forward her email to the group myself (not a bad plan, but kind of a pain for us, and it's delayed - by several days if I forget

). The other option is to see if she can get access to the desktop version of the Gmail interface (which is difficult on a mobile device). I'm sure we're not the first parents to run into this problem. Any suggestions would be helpful.
Thanks,
Myles