The assumption here is that you have my phone number. If you don’t have my phone number, and you think that’s an oversight on my part, please send me an e-mail at zadka.moshe@gmail.com and ask for it. If you don’t have my phone number because I don’t know you, I am usually pretty responsive on e-mail.
In order of preference:
- FB Messenger: you can use it without a Facebook account.
- Signal
- Google Hangouts
- SMS Message
Moshe'z 
I expected to hear whether you prefer RabbitMQ or ZeroMQ 😛