All networks are filtering on local numeric Sender IDs, so we strongly advise you not to send using a local number.
Yemen Mobile (42103) and SabaFon (42101) are being delivered via a local direct connection. Numeric and generic sender IDs are not accepted here, and we recommend you send using your company brand name.
There are no additional content restrictions beyond those in our Acceptable Use Policy
Other features/restrictions of note:
Delivery receipts are supported and are considered reliable.