Yep ( http://federalevidence.com/node/784 http://federalevidence.com/node/784 ) ; mail properly addressed is assumed to be delivered. For related reasons, any m

Yep ( http://federalevidence.com/node/784 http://federalevidence.com/node/784 ) ; mail properly addressed is assumed to be delivered. For related reasons, any mail sent to a business is assumed to have been read. This is a rebuttable presumption. Even knowing this, many lawyers (and other savvy people) send certified mail with a return receipt. It strengthens your case in the event that the other party tries to disavow receipt of the mail, and it says (rather loudly) that there is a folder on your desk labeled Evidence and that every additional action the other party takes will join that folder.