From your Account Settings page, you have the option to change the return-path header for either phishing emails or training emails. Described below are the reasons why you would want to change the return-path header for each type of email.

Overwriting the Return-Path Header on Your Phishing Tests

The below steps will show you how to overwrite the return-path header on your KnowBe4 account. It is vital to do this if you're using a mail provider like Google Workspace (formerly G Suite), which will display "via KnowBe4" next to the sender address in your phishing tests if you do not.

1. Log in to your KnowBe4 admin account.
2. Click your email address on the top-right of the screen, then click Account Settings.
3. Navigate to the Phishing Settings section.
4. Under the Phishing Email Headers subsection, click the checkbox next to Overwrite Fixed Return-path Address with Sender Address.
5. Save your settings by clicking Save Changes at the bottom of the page. 

Changing the Return-Path Header on Your Training Emails

The below steps will show you how to change the static return-path header for training emails on your KnowBe4 account. You will want to do this if you want to spoof your domain in training notifications.

1. Log in to your KnowBe4 admin account.
2. Click your email address on the top-right of the screen, then click Account Settings.
3. Navigate to the Training Settings section.
4. Under the Training Email Headers subsection, click the checkbox next to Overwrite Fixed Return-path Address with Sender Address.
5. (Optional) Click the Add Custom Header checkbox to set a custom header name and header value.
6. Save your settings by clicking Save Changes at the bottom of the page.