There are three ways a contributor can send a GroupTweet from his/her personal Twitter account (enable any/all/none):
1) Send a Direct Message to the group account
2) Send an @Reply or @Mention to the group account
3) Include the group's Hashtag in a Tweet
What if my Twitter contributors don't have their own personal Twitter accounts??
No problem! Just send them your GroupTweet dashboard invite link and they can login with any email address and Tweet from the dashboard!