Delivery Receipts on Vietnam:
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.
MobiFone Vietnam (45201)
- This carrier is blocking 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 is blocking alphanumeric Sender ID, shortcode and local numbers (in both domestic and international formats). We recommend the use of international formatted numeric Sender ID to bypass the Vinaphone filter. 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 is blocking 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.
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.
Supported Features
Reliable handset delivery receipts - No
Dynamic SenderID - Random Numeric
Unicode - Yes
Concatenated Messages - Yes