Comment by inopinatus

It is still viable to self-host everything from photos to mail yourself and sync to cloud/storage services as disaster recovery. It helps if you have an infrastructure background but anyone can set this up. Never trust just one service; no company is too big to fail and durability is always best effort, even if that effort is very good. Mail is the most annoying service to self-host, not because it's technically difficult but because deliverability is a long-term reputation function that easily deteriorates from misconfiguration or neglect. Nevertheless I've been my own MX and storage provider since the early '90s and it's too late to change my ways now, you just have to keep up with the gold standard as it varies.

The biggest hazard, especially if the whole family uses your stuff, is key-person risk, since infrastructure requires maintenance. The second biggest is being out of your depth in securing it.

My only regret in all my years of self-hosting was that time I returned a portable /24 to APNIC. Still stings even if it was the right thing to do, civically speaking.

I retain gmail & hotmail accounts for deliverability checks and as signup swamps.