Just a little storytime about Vinted.
I just wanted to register on Vinted to sell some second-hand stuff, because I haven’t had much success elsewhere. I would have never imaged that they will reject my addy.io alias. After a couple of annoying e-mails detailing how to register an account, I was left with the answer on the screenshot after trying to get an explanation why the domain I am paying for (not some random free gmail address) is not worthy of their services…
I was curious so I tried to register with a Proton Pass liss which is @passmail.net and they also refuse those. I think they are afraid of services which allow to easily create multiple aliases, because people could create multiple accounts very easily (scammers maybe)? It’s a dumb rationale because it’s not much harder to create many Gmail accounts but that’s the only reason I can think of.