Contacts GM is an universal address book application.
It also allows you to send mails and sms to groups.

Main features are:

● add, modify, delete, copy contacts groups
● add, modify, delete contacts
● add and delete contacts in groups
● send mail or message (SMS) to all contacts of a group in one operation
● send an attachment via mail to all contacts of a group (via Open in)
● import contacts from a vCard file into one or more groups from the address book (via Open in)
● swipe gesture on a group displaying shortcuts to edit, duplicate, remove the group and to send an mail and a message (SMS) to contacts of the group
● swipe gesture on a contact displaying shortcuts for send mail and message (SMS), call, view the address on a map
● the ability to view a contact's address in Maps®, Google Maps® [webapp], Google Maps® [app] or Tomtom® if installed
● the ability to send mail via Sparrow® if installed
• Favorites
• Phone number composer


Please read this:
the creation of groups does not work if the contacts come from a Exchange, Google or Hotmail account.