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3.9.4. Using GPG with Alpine

If you are using the email client Alpine or Pine then you will also need to download and install ez-pine-gpg. This software is currently available from http://business-php.com/opensource/ez-pine-gpg/. Once you have installed ez-pine-gpg you will need to modify your ~/.pinerc file. You need to:
  1. /home/username/bin should be replaced with the installation path that you specified.
  2. In two places, the gpg-identifier after _RECIPIENTS_ should be replaced with your GPG public key's identifier. The reason you include your own GPG identifier here is so that if you send an encrypted message to "Alice", that message is also encrypted with your public key -- if you don't do this, then you will not be able to open that message in your sent-mail folder and remind yourself of what you wrote.
It should look something like this:
# This variable takes a list of programs that message text is piped into
# after MIME decoding, prior to display.
display-filters=_LEADING("-----BEGIN PGP")_ /home/max/bin/ez-pine-gpg-incoming

# This defines a program that message text is piped into before MIME
# encoding, prior to sending
sending-filters=/home/max/bin/ez-pine-gpg-sign _INCLUDEALLHDRS_,
    /home/username/bin/ez-pine-gpg-encrypt _RECIPIENTS_ gpg-identifier,
    /home/username/bin/ez-pine-gpg-sign-and-encrypt _INCLUDEALLHDRS_ _RECIPIENTS_ gpg-identifier