he is not looking for a mail system, he is looking for a "system for users to communicate between each other on a website". it does not need to be real time, b

he is not looking for a mail system, he is looking for a "system for users to communicate between each other on a website". it does not need to be real time, but its not be a problem if it is. centrifugo features include "History information for channels (last messages sent into channels)" what should work as a "mailbox".