---
title: Validating mailing prior to dispatch
slug: campaign/docs/validating-mailing-prior-to-dispatch
docTags: 
createdAt: 2026-07-20T15:45:14.793Z
---

:::hint{type="info"}
**Note**

To enable this feature, contact [customer support](docId\:ZWe1T3UPz3JW6_4mc76qV).
:::

This add-on validates whether predefined parameters of a mailing are met. The validation is carried out prior to dispatch or when the mailing is saved. You can configure this automatic test for virtually any parameter of a mailing. You can validate against a defined value or check if a parameter is set.

For example, you can validate the mailing against the following conditions:

- Mailing must contain an attachment
- Maximum number of emails per hour is set for dispatch and lies within a defined range
- Target group is selected