Sending One-way SMS with Sinch

Alexander_Mair — Fri, 25 Jul 2025 10:01:12 GMT

To implement SMS marketing campaigns, many businesses require the ability to send messages only one way - where the recipient can't reply to the sender. Sinch’s one-way SMS includes multiple offerings that will cater to your specific needs, that is, local or global, sending transactional or promotional SMS.

One-way messaging

With Sinch one-way SMS you will:

Get the freedom to choose where you send SMS messages, we cover the world
Leverage lower rates when sending domestic traffic
Make sure all your critical communications are delivered in the moment of need
Get access to our direct operator connections to select specific routing
Have the ability to run cost-effective marketing campaigns.

Additionally, you can check the Country Information section on the Build Dashboard to find out if your location supports 1-way numbers.

Alphanumeric sender IDs

To send 1-way SMS messages, you need to use an alphanumeric sender ID. This is an 11 character code that allows you to send one way messages as well as being a brand identifier.

To find out how to register an alphanumeric sender ID, we would recommend you check out the following links:

Take a look at the Sinch SMS Product page to learn more about our SMS products, or click here to sign up to our self-service portal and get started today.

article Sending One-way SMS with Sinch in SMS

Sending One-way SMS with Sinch

One-way messaging

Alphanumeric sender IDs