These docs are for v5. Click to read the latest docs for v2026-03-15.

Product Categories

Intro

Endpoint: https://api.omnisend.com/v5/product-categories

Guide: How to sync products catalog, categories

Use product categories to organize your products into groups. Assign categories to products via the categoryIDs field in the Products API.

Field constraints

FieldConstraint
categoryID1-100 characters, must be unique per brand
titleMax 255 characters

Pagination

ParameterDefaultMax
limit100250
offset0-

Behavior notes

Note: Creating a category with an existing categoryID returns 409 Conflict. Use PATCH to update existing categories.

Note: Create, update, and delete operations are processed asynchronously. Changes may take a moment to appear in subsequent requests.