We've had mixminion[1] around for years, which handles backwards compatibility with aplomb. [1] https://github.com/mixminion/mixminion/ https://github.com/mixm

We've had mixminion[1] around for years, which handles backwards compatibility with aplomb. [1] https://github.com/mixminion/mixminion/ https://github.com/mixminion/mixminion/