Your store uses a deprecated version of the Omnisend API, which will be sunset on the date listed below. You need to migrate your integration to the latest Omnisend API before the sunset date of the version you use.

Important: After that date, the API version will stop working.

Sunset dates and migration guides

v3: sunset on December 31, 2027. Migration guide

v5: sunset on June 30, 2027. Migration guide

Using an AI coding assistant? See here.

The latest Omnisend API gives you more capabilities, including new endpoints for campaigns, automations, segments, email templates and analytics. We recommend that you migrate as soon as possible.

You can see the API logs in the API access logs section. Check for the request URLs prefixed with /v3 or /v5 for the legacy API requests.

If you have concerns about the migration or need help, contact us at support@omnisend.com.

Best regards, The Omnisend Team