I'm using gmail with my own domain and I still get my email filtered out. You would need to warm your IP address for years to not get into spam folders in most places. Not to mention the uptime issue. I would not recommend. You may try fastmail or some similar service instead.

ELI5 coz I'm not in IT. Why would anyone throw out of warranty items and not use them if they are well specd? If it breaks it does not matter that it is down with warranty or down without warranty.

This is on pair with the "i found next to the road" type of posts and the "found on the junkyard" posts.