I find it amusing that a .org site (temp-mail.org) has ads all over it while a .com site (temporarymail.com) does not, given that .org was mostly used by non-profits while .com is intended for commercial use.

It's not 1997 anymore. Anyone can buy any domain name and use it for any purpose. Except .gov and .edu obviously

I remember when this was a thing like back in the early 2000s, but nowadays everyone bombards their users with ads regardless of TLD.

Non-profits still have bills to pay...

Kind of compromises the mission alignment and trust though if it's through ads.

OpenAI is a non-profit.

(Kinda like a penguin is technically a bird.)

That's not really true because they used to have the same mail server so if you found one domain, then you could easily find the rest of the domains too.

I wouldn't call it "easily" as you need a way to reverse lookup for all MX hostnames that resolve to a given IP address. Obviously they can rotate the IP address too, to further complicate things.

They use the same IP and their domains are all listed here: https://verifymail.io/domain/carspure.com

I have to admit that they have improved though as earlier they were all using the same MX records, now at least each domain has its own.