I'm curious about how they'll handle SMS. I once worked for a place that self hosted a message gateway by co-locating a bunch of cellphones alongside their serv

I'm curious about how they'll handle SMS. I once worked for a place that self hosted a message gateway by co-locating a bunch of cellphones alongside their servers. It worked but probably wouldn't scale for their purposes. Our setup also assumed that customers were in the same country as the servers.