SimpleX group chats are encrypted, so like Matrix there's scaling issues.  Any mass encryption event will have this problem. That's why we're looking to do it instead like an email bot but through uncensored DNS / private metadata 

 Thanks, zapped!

What would you say is the largest group currently possible on SimpleX and Matrix? 

 Matrix is going to allow much more than SimpleX right now, but simplex is still being developed.

Some matrix groups have thousands of people. The question is how big a server its running on and what kind of lag is tolerable