The New Mexico Certificate of Mailing Statement of Social Security Number is a document that serves as proof that a document or package has been mailed to an individual or organization. It is an official document issued by the New Mexico Secretary of State's office. It includes the date the document was mailed, the name of the addressee, the type of document being sent, the address of the addressee, and the certified mail number. There are two types of New Mexico Certificate of Mailing Statement of Social Security Number: a regular certificate of mailing and a restricted certificate of mailing. The regular certificate of mailing is used for documents which do not contain sensitive information. The restricted certificate of mailing is used for documents that may contain sensitive information, such as a Social Security number. Both certificates provide proof of mailing and can be used for legal purposes in New Mexico.