It is recommended and best practise that you have your customers' mobile numbers which are always on and always with them. While it is also recommend that you record their permission for you to market to them.
Keeping the database up to date is essential to your success. An up to date database will save you money and will also help you maintain the integrity of all communication to your customers.
iTouch will scrub your database so that only numbers still in use are retained!
iTouch allows you to manage all communications with an active database so you can segregate according to wants and interests
The ONLY recommended use for number context is for the updating and integrity maintenance of all customer contact information data