S/MIME Software

Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.

Gpg4win enables users to securely transport emails and files with the help of encryption and digital signatures. Encryption protects the contents against an unwanted party reading it. Digital signatures make sure that it was not modified and comes from a specific sender.

Mac email client with extensive keyboard control, Markdown email composition, advanced search, smart mailboxes, and cryptographic encryption options.

Becky! Internet Mail is an email client for Windows OS. Becky! Internet Mail supports POP3, IMAP and S/MIME as well as OpenPGP via add-ons.

Need a great working email client on Android? MailDroid is the one you should download! Has the power of Outlook and Thunderbird for your Android device.

S/MIME software - p7mViewer 3.0, Eudora S/MIME and other

CipherMail for Android is an Android application which can be used with your existing Android mail application to send and receive S/MIME digitally signed and encrypted email with an Android smartphone.