How to turn on SMS in Klaviyo

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Learn how to enable SMS and, for those with subscribers in the UK and Australia, set up your branded sender ID.

Before you begin

You must turn on SMS before you can do any of the following:

  • Collect SMS subscribers
  • Import SMS contacts
  • Send SMS or MMS messages

If you have contacts in the UK or Australia, you will also need to set up a sending number (e.g., a branded sender ID) to collect or send to people in these countries. 

 

Enable SMS

  1. Click on the name of your organization in the upper right-hand corner 
  2. Select Account from the dropdown
  3. Navigate to Settings > SMS 
  4. Click Set up SMS for free
  5. Click Continue

Create your branded sender IDs (UK and AUS)

Branded sender IDs are the only way to send to people in Australia. They are free with your Klaviyo SMS plan and can be branded. However, you need to create your ID yourself. 

The same branded sender ID works for both Australia and the UK. However, with a paid plan, you can request a long code in either the UK or Australia, or a short code in the UK. 

Requirements for a branded sender ID

Branded sender IDs must:

  • Be between 3-11 characters 
  • Contain at least one letter
  • Not have any special characters (e.g., ~, &, etc.)

Create your sender ID

  1. Navigate to Account > Settings > SMS
  2. Go to the Sending Numbers section
  3. Click the dropdown menu on the right-hand side of the branded ID
  4. Choose Edit
    Sending numbers section showing the dropdown for an alphanumeric sender ID
  5. In the resulting modal, add your sender ID
    The modal where you can edit or turn off your sender ID
  6. Click Save

You'll now be able to gather and send to SMS subscribers in the UK and Australia.  

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