has a small address book integrated in it. The address book allows you to store the phone numbers of your contacts.
To add a new contact, enter the contacts name and then press the Add New Contact button.
To remove a Contact's number from your address book, select the contact's name from the list on the left and then press the Remove button.
To edit a contact's phone number, select the contact's name from the list to the left, then edit the details you want. Finally press the Edit button.
You can also categorize your contacts into groups, for easier access. This is especially important for those of you who have a huge list of contacts. has 4 predefined groups, and allows you to specify another 5 custom groups. In the Send dialog, you will be able to show each group separately. If you want to subgroup the contacts in each group, or if you want a certain name to be on top of the list, you can add a number before the contacts name e.g.. "1. Hazem El-Oraby". See the image above.
The whole idea of SMS is to keep in touch with people, and helps you do this. You can tell to remind you to send an SMS to a certain person every X days. When it is time to send the SMS, you will find a check mark next to that person's name in the Send dialog.