Microsoft Office 365 Allowlisting


To allow phishing URLs that are part of third-party attack simulation training, use the advanced delivery configuration to specify the URLs.

Don't use the Tenant Allow/Block List.

Microsoft's secure by default feature may affect the way your organization allowlists Prventi. Due to this change, you can allowlist Prventi using Microsoft's advanced delivery policies feature instead.

In this article, you will learn how to allowlist Prventi with the advanced delivery policy feature. Read more about configuring the delivery of third-party phishing simulations to users.

How to Allowlist Prventi Using Advanced Delivery Policies

  1. Expand Email and collaboration in the menu

  2. Select the Phishing simulation tab at the top of the page

  3. Select Edit

Add the following domains:,,

Sending IP

Simulation URLs to allow

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