GroupShot

Create email groups you can use to send and forward from the Mail app, , with this new app from the developer of "Mailshot".
Create groups from your existing contacts, create new ones, or import lists of names and email addresses- GroupShot will handle the tricky stuff of making sure contacts are all in the right places to make it all work.
The app is free to download, and you can create groups and enter new contacts. Adding contacts from a checklist, and importing groups from a list requires a subscription. You can try the more advanced features for a few days without charge, and can even keep any groups you create if you let your subscription expire.
NOTE: This app is designed to work with the Mail app and some other third party apps. Note that the Gmail App cannot send email to address book groups (although you CAN use Gmail accounts from the Mail app)
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/