You can mitigate the metatdata leakage by posting your GPG-encrypted message on pastebin, over Tor. Address it by putting the title of the next message in the e

You can mitigate the metatdata leakage by posting your GPG-encrypted message on pastebin, over Tor. Address it by putting the title of the next message in the encrypted text. For bonus steno disguise the message as a GPG signing block for something boring.