Eloqua Application API create and update email endpoints – senderEmail domain validation [Nov 2025]

Overview

With the arrival of Eloqua release 25D (Oct 31, 2025 – Nov 13, 2025), the Application API create and update email endpoints, both 1.0 and 2.0, will now validate the sender email to confirm an allowed domain is being used. See the Configuration Updates to Enhance Email Deliverability in Eloqua product notice for more details on this update.

What’s changing?

With 25D, the Application API create and update email endpoints, both 1.0 and 2.0, will now validate the sender email to confirm an allowed domain is being used and return a validation error if the senderEmail is not using an allowed domain, which will impact the following endpoints: