How to port a number into Klaviyo

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You will learn

Learn how to port an SMS sending number into Klaviyo. 

Before you begin

Porting can take around 4 weeks. When migrating to Klaviyo, please build in time for this process. 

Note that porting a number will result in the loss of any voice capabilities.

Types of numbers that can be ported

Type of number

Can it be ported? 



Short code


Shared short code


Branded sender ID

No, but you can set the ID to be the same as your previous one

Long code


Port a Sending Number

  1. Navigate to Account > Settings
  2. Click SMS
  3. Click into the Request Additional Numbers dropdown
    The SMS settings page showing the Request Additional Numbers dropdown in the Sending Numbers section
  4. Select Port an Existing Number 
  5. Click Submit Port Request 
    Modal to submit a port request


After you submit your port request, you can expect to be contacted by a Klaviyo representative. 

From that point, porting can take up to 4 weeks. 

Additional resources

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