 Hello admins! As a security precaution, it's a good idea to remind your users not to open attachments or click on links from unknown senders. One easy way to implement this in Office 365 is by setting up a mail flow rule. In this tutorial, we'll show you how to set up your own warning message for all external emails sent to your users inside your organization. After logging into the admin center at portal.office.com, click the ellipses and then click the admin icon to bring up the list of admin portals. Select exchange at the top of the list. Once in the exchange admin center, click mail flow from the left hand menu and click the plus symbol under the rules tab. Click create new rule to bring up the wizard. Give your rule a name and apply the rule if the sender is located outside the organization. Scroll to the bottom of the window and select more options. Click add a condition and from the drop down menu, select the recipient is external slash internal, then choose inside the organization. Under do the following, select apply a disclaimer to the message. Pre-pen the disclaimer. Then click enter text. Then we enter the message using htmi. After entering the text, you'll need to specify the fallback action. Click select one and choose wrap. Then okay. If you wish, scroll down to priority to set the priority level. If this is the only rule you have, you can set it to zero. Click save and you're done. Now when users receive an email from an external sender, they'll be notified with your message. I'm Steve with the Protected Trust Train Department and we'll see you next time.