I am in need of an app for my iPhone 6 that will allow me to send a message to much more than 10 people at a time. (Evidently that is an AT&T limitation.). I was using an app called "Group Texting" but the iOS 11 update caused it to now have many issues. I must have an app that does not require everyone on the receiving end to download the app, or have iMessage capabilities, etc. Also, I need to be able to create various groups without having to recreate the group with every use. I know this seems to be a common issue and there doesn't seem to be easy answers. Just "grabbing for straws" hoping someone can help.