A method and system for mail security and traceability is disclosed. Identification code producing equipment prints an encrypted code which identifies the source of the individual mail piece on each mail piece in a batch of mail. When the mailer submits the mailing to the Postal service, recording equipment captures and records the identity of the person submitting the mail. Verification equipment samples the batch of mail and reads the identification code on each mail piece in the sample. Paperwork submitted with the mailing also contains an encrypted code which is scanned and compared to the identification code on the mail pieces to verify the origin of the mailing. Any mail piece that does not have a mark or that has the wrong code is rejected.