I'm pretty sure the vast majority of email servers are corporate servers, not in FANG datacenters. 3-5 years ago I probably would have agreed with you. Today I

I'm pretty sure the vast majority of email servers are corporate servers, not in FANG datacenters. 3-5 years ago I probably would have agreed with you. Today I'm not so sure. And even among the companies running their 'own' email servers, the physical hardware is very likely in a Microsoft/Amazon/Google datacenter.