In FreshDesk navigate to Admin => Apps => Click "Get More Apps" then search for iFrame It. Select the app then click "Install."


After that you'll be asked to set the iFrame URL. The URL should include an email query string parameter. Your URL should end with ?email= OR ?email_address= OR whatever the email address parameter on your remote system expects. The email address of the requestor will be appended to the URL that you provide.