Quote Originally Posted by lizmonster View Post
I'd phrase the letter as a confirmation of the email, and specify that Agent waived the notice.

And save the email for eternity.

(And if you have reasons to be concerned about the integrity of anyone involved, talk to an attorney and follow their advice, because we are all Strangers on the Internet. )
Print an extra copy of the letter being sent certified, print a copy of the email, and staple it all together with your copies of the receipts from the post office. File it away Just In Case for extra CYA insurance. These days, you can't rely on keeping electronic copies of any important correspondence as your sole source of back-up.