Omnisend API · Endpoint removal
API v3 stops working
Stops working (in 434 days)
Calls to /v3/* on Omnisend API stop working on December 31, 2027.
What to use instead of these calls
Move to the v2026-03-15 API: base path https://api.omnisend.com/api/ (contacts, products, categories, batches, events), Authorization: Omnisend-API-Key {key} and an Omnisend-Version: 2026-03-15 header on every request.
Calls it hits
/v3/*
The v3 API is deprecated and will be sunset on December 31, 2027 .
Facts
- API
- Omnisend API
api.omnisend.com - Kind
- Endpoint removal
- Takes effect
- December 31, 2027
- Calls after that day
- Fail
- Source
- Announcement
- Last updated
More from Omnisend API
- API v5 stops working Stops working