The Maryland Certificate of Service (Example for Unrepresented Parties Serving by Mail) is a form that is used by unrepresented parties in Maryland who are serving documents by mail. This form is used to certify that the documents have been sent via mail to the intended recipient. It requires the sender to provide the full name and address of the recipient, the date the documents were sent, a statement certifying that the documents were sent, and the signature of the sender. There are two different types of Maryland Certificate of Service (Example for Unrepresented Parties Serving by Mail). The first is for documents sent by first-class mail. This requires the sender to indicate the number of postage stamps used to mail the documents, the date the documents were sent, and the signature of the sender. The second is for documents sent by certified mail. This requires the sender to provide the number of the certified mail receipt, the date the documents were sent, and the signature of the sender.