On Fri, Oct 17, 2025 at 08:35:03PM +0800, W. D. Sadeep wrote: > Hello, > > I'm trying to send a PGP-encrypted email using the mail command. The > problem is my mail client (mutt) doesn't recognize it as a PGP-encrypted > email. I'm sending the email like so: > > echo "encrypted msg" | gpg -e -f key | mail -s "test" [email protected] > > I think it's because the content-type is not set. Is there a way to do > this?
With OpenBSD mail(1) you can use my patches: https://en.roquesor.com/Downloads/mail_patches.tar.gz The add_headers.diff allows you to add any header from the command line (option '-a'). Then use something like the following in a shell script: ---------------------------------8<------------------------------------- echo "Hello, world!" | gpg -e --armor -r <key> > encrypted_message cat << EOT > message --foo Content-Type: application/pgp-encrypted Version: 1 --foo Content-Type: application/octet-stream EOT cat encrypted_message >> message printf "\n--foo--\n" >> message mail -s Test \ -a 'MIME-Version: 1.0' \ -a 'Content-Type: multipart/encrypted; boundary="foo"; protocol="application/pgp-encrypted"' \ [email protected] < message --------------------------------->8------------------------------------- -- Walter
