The mobile marketing best practice guidelines require you to deliver a confirmation message after someone has opt-in to your campaign. This message normally contains information about the campaign and how to opt-out. Using our platform, brands can now detect the handset of the subscriber by sending the opt-in confirmation message as an MMS instead of an SMS. The additional benefit here is that all future MMS messages can be specifically optimized for the recipients mobile device. You can also export their handset information and segment your list based on whether they are a smartphone subscriber or feature phone subscriber.