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+There are a number of options that can be added to this application to make it
+more flexible. Here are some ideas that I will implement when I get around to
+it. Patches welcome.
+
+1.) Use Key IDs interchangeably with email addresses
+
+2.) Optionally support signing as well as encrypting.
+
+  --sign-key       "The email address or key id to sign with"
+  --sign-pass      "The password for the secret signing key"
+  --sign-pass-file "Path to file containing password for the secret signing key"
+
+3.) If there are no recipients, should we just output the original message and
+    exit, or die?
+
+  --on-missing-recipients output-plain / die
+
+4.) Perhaps have an optional default recipient option which is used if no other
+    recipients are provided.
+
+  --default-recipient     key-id or email-address
+
+4.) If one or more of the recipients doesn't have a public key in the local gpg
+    ring how do we behave?
+
+  --on-missing-key        output-plain  / discard-recipient / die
+
+5.) At the moment, we prefer inline encryption and fall back to PGP/MIME if
+    the message is multipart. Should provide several different optional modes
+    of encryption.
+
+  --encrypt-mode          prefer-inline / pgpmime / inline-or-plain
+
+6.) Optionally specify path to the gpg "homedir" on the command line
+
+  --gpg-home              path-to-gnupg-directory