Sender ID:
MobiFone Vietnam (45201)
- This carrier blocks alphanumeric Sender ID, shortcode and local numbers (in both domestic and international formats). Sender IDs on messages sent to MobiFone will be changed automatically into a numeric string in the format of an International format number to ensure delivery.
Vinaphone Vietnam (45202)
- This carrier blocks alphanumeric Sender ID, shortcode and local numbers (in both domestic and international formats). We recommend the use of international formatted numeric Sender ID to comply with the Vinaphone filter. Non-compliant Sender IDs on messages sent to Vinaphone will be changed automatically into a numeric string in the format of an International format number to ensure delivery.
Viettel Vietnam (45204)
- This carrier blocks numeric Sender ID, shortcode and local numbers (in both domestic and international formats). Sender IDs on messages sent to Viettel will be changed automatically into alpha Sender ID including "Verify", or other form of generic Alpha Sender ID to ensure delivery.
Pre-registered Sender ID:
Please note we have an alternative and higher quality route towards Vietnam, at a price higher than our default routing. This route allows to pre-register alpha Sender IDs, however it does not provide Delivery Receipts. Please ask your account manager about this if your traffic is above 1M SMS per month and you are interested.
Content:
There are no additional content restrictions beyond those in our Acceptable Use Policy
Unicode:
Unicode is supported.
Concatenated messages:
Concatenated messages are supported.
Other features/restrictions of note:
Delivery Receipts:
All Vietnam operators do not support handset Delivery Receipts. Some routes generate network Delivery Receipt, therefore a 'positive DLR' does not necessarily mean the message was received on the handset.
Spam Recognition:
Any messages sent with the same content to the same destination number within a 20 second interval would be classified as Spam.
Links:
Global SMS Features Overview (Outbound only)
Global SMS Numbers Features Overview