Messmo uses the mobile Internet, and combines SMS with the best of instant messaging and email, to give you: Free TXT: Use real mobile numbers for SMS, Free TXT and attachments. Send to messmo and non messmo users. FriendCasts: Create an instant group with a new number. Send one TXT and all of your friends get the message. Share a cool photo, start a chat on a hot topic! Your World: Send emails. Upload, post and much more with FaceBook!