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How do I use S/MIME, PGP or GnuPG to send and receive signed or encrypted messages?

April 26, 2017encrypted GnuPG Messages mime PGP send signed

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How do I use S/MIME, PGP or GnuPG to send and receive signed or encrypted messages?

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To use S/MIME, go to Tools > Account Settings… > account name > Security (Edit > Account Settings… on Linux). You can set which certificates to use with each account for digital signing and/or encryption. Hooks to PGP or GnuPG are not included in Thunderbird, but are under development at Enigmail.

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To use S/MIME, open Mail/News and go to Edit | Mail & Newsgroup Account Settings | account name | Security. You can set which certificates to use with each account for digital signing and/or encryption. Hooks to PGP or GnuPG are not yet included in Mozilla, but are under development at Enigmail.