Alpha Sender ID is supported.
Numeric senders will be overwritten by "SMS" to ensure delivery unless you are using a local Nexmo Long Virtual number.
Sender IDs that contain the operator name (ie, "Orange", "Play" etc) and sensitive Sender IDs (such as "Police") will be blocked completely.
In addition to our content restrictions in our Acceptable Use Policy;
Messages with ads of Premium Rate services in content will be rejected
Messages that contain premium numbers and shortcodes in the body of the message will be blocked as messages related to Premium Services are not allowed to be to sent via A2P connections.
Messages with betting odds will be rejected
Concatenated/long messages are supported.
Other features/restrictions of note:
Handset delivery receipts are supported.