Nexmo is directly connected with both TNM and Airtel Malawi. We can reach all subscribers through both operators. We have failover logic so that if a connection to one of the operators is down, we automatically failover to the other Carrier.
Airtel has a restriction around sender IDs and as the two binds are not the most stable due to local ISP issues, we will change the sender ID to SMS on all messages.
There are no additional content restrictions beyond those in our Acceptable Use Policy
Other features/restrictions of note:
Delivery receipts are supported.