Send photos via MMS to trigger@recipe.ifttt.com to post them to GroupMe, without the GroupMe app or wasting your data plan. You must set the email address of the Email channel (or just create a new account) to your cell service provider's MMS email gateway. For AT&T, that would be @mms.att.net. For Verizon, that would be @vzwpix.com. See http://martinfitzpatrick.name/list-of-email-to-sms-gateways/ for other carriers.
Discover more time saving integrations for GroupMe and Email