South Carolina Affidavit of Service by Mailing (Answer) is a document used to certify that a legal document has been served to another person through the mail. It is used to prove that the recipient was given notice of the action and that the legal document was delivered according to the law. The affidavit must be completed and signed by the person who sent the document via mail and must include the date the document was sent, the address it was sent to, and the type of document that was sent. There are two different types of South Carolina Affidavit of Service by Mailing (Answer): General Affidavit of Service by Mailing and Special Affidavit of Service by Mailing. The General Affidavit of Service by Mailing is used when the document is sent to a person or business. The Special Affidavit of Service by Mailing is used when the document is sent to a court or government agency.