Which of the following can best describe this talk?

Dear fellows of Wilson Insurance Group, this is a reminder regarding the receiving of mails at our facility. Any incoming mail should have the company name on it in addition to the name of the recipient. We have constantly had instances where the post office has returned mail intended for us to the sender because it lacked a company name. So please emphasize all potential senders the importance of including our company name. Thank you as always for your cooperation.