Yes, if you have received a genuine Phishing email into your organisation, you can then replicate and publish this as a phishing simulation. 

This can be a very powerful learning opportunity for your end users when the results of your simulation are shared internally. 

• First of all, to replicate the genuine phish email, follow the steps within article: Creating Your Own Phish Template. 
• Next, click on Source and paste the HTML Source Code for your phishing email.

• Select the Source button again, and your phish will now appear within the Email Body, where it can be further customised as required. 

You can also choose to expand this simulation by creating your own custom Learning Experience that highlights those red flags within the email that make it identifiable as a Phish.

If you wish you do this, please follow the steps within this article which will guide you through the creation of your own Learning Experience: Can I Upload My Own Learning Experiences?