Sender ID:
Orange (61203) all senders will be overwritten to "NXSMS" to ensure delivery.
Atlantique Telecom (61202) and MTN (61205) are Fully featured and support all sender IDs.
Hypens (-) and underscores (_) are not allowed within the Sender ID.
Content:
There are no additional content restrictions beyond those in our Acceptable Use Policy
Other features/restrictions of note:
Delivery Receipts:
Atlantique Telecom (61202) and MTN (61205) support delivery receipts.
Links:
Global SMS Features Overview (Outbound only)
Global SMS Numbers Features Overview