CipherMail by CipherMail is an email encryption gateway that supports multiple encryption standards including S/MIME, PGP, TLS, and PDF encryption. It is designed to automatically protect email against unauthorized access in transit and at rest, and is compatible with all SMTP-based email services. The product can automatically sign outgoing emails with S/MIME and PGP, and includes features for data leak prevention, archiving, and eDiscovery of encrypted emails.