Updating on @abelxluck post here:
We’ve released both our Signal and WhatsApp channel code for Zammad. As abel mentioned, there is a patch required for the integration with Zammad, which you can find above.
QuePasa is built on the same approach as we used with Signal, but for WhatsApp. While we have it working in production, it does take a little bit of finesse to get it setup. It is also very much 1.0, and we are looking for help debugging and improving it.
If anyone is interested, please contact me here, or you can find me directly as nathan@guardianproject.info or @n8fr8 in various places (twitter, keybase).
We are also looking to hire another developer to help us with our efforts building on Zammad, including the kind of channel integration efforts we have been posting about here. If you are interested or know someone who might have some spare cycles, please let me know.