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How to send OpenPGP encrypted email contents as binary instead of ASCII armor

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I noticed that using OpenPGP encryption in Thunderbird results in the encrypted email content to be ASCII armored. How do I configure Thunderbird to produce binary PGP instead of ASCII armored PGP? An OpenPGP encrypted file in binary format is smaller than one in armored format (i.e. text format).

I noticed that using OpenPGP encryption in Thunderbird results in the encrypted email content to be ASCII armored. How do I configure Thunderbird to produce binary PGP instead of ASCII armored PGP? An OpenPGP encrypted file in binary format is smaller than one in armored format (i.e. text format).

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You might want to ask that rather technical question in the dedicated E2EE group. https://thunderbird.topicbox.com/groups/e2ee