Add functionality to include a note when sending a test email

Like in Mailchimp one should be able to add a note to the test version recipients. Then they wont be freaked out that the one they are seeing has already been sent?!

HubSpot please add this function! I have to send myself a test and forward this in Outlook to those proofing with my instructions!

This would be beyond helpful. I always have to send a 2nd email with why I just sent a test email.

I thought this feature already existed. Would definitely like to have a text field that allows you to indicate why you are sending the test email to the team member. This would allow you to let your entire marketing team to make comments about assets and content and then return the email with any updates they would like to see.