Sender ID:
29401 T-Mobile, all numeric and shortcode senders are not supported. SMS will be overwritten with a generic name to ensure delivery.
Other networks will be overwritten with random numbers to ensure delivery.
Content:
There are no additional content restrictions beyond those in our Acceptable Use Policy
Other features/restrictions of note:
Delivery Receipts:
Handset delivery receipts are supported.
Links:
Global SMS Features Overview (Outbound only)
Global SMS Numbers Features Overview
