I would like for paying members of my website to be able to decide if they want to have a txt message sent to them when they have unread messages. It should be similar to the way it is now with emails.
If a user has an unread message they receive a text message to their mobile phone. If they receive another message before they get a chance to login, they do not receive another message. This way the text messages to their mobile phone are limited as there is no reason to send lots of text messages. At any time the user can login to their account and update the phone number and/or stop us from sending text messages to their mobile phone.