Where are people getting their emails?

https://sh.itjust.works/post/16997

Where are people getting their emails? - sh.itjust.works

Most of the Lemmy instances seem to require an email to sign up. That’s fine, except most of the places you would go to sign up for email want you to… already have an email. And often a phone number. And almost always a first name, last name, and birthday. I promise not to do bad stuff, but I don’t want that sort of information able to be publicly associated with my accounts where I write stuff, when everyone inevitably loses their databases to hackers. Pseudonymity is good, actually; on the Internet nobody knows you’re a dog, etc. Is anyone doing normal webmail registration anymore? Set username and password, receive email for free? I don’t even need to send anything to sign up for accounts elsewhere.

It does not answer your question, but my mail provider (mailbox.org) has an option to generate temporary addresses that are viable for 30 days.
Also a mailbox.org user but I use an alias address for my social media accounts. Also never seen the option to generate temporary addresses. Could you tell me where to find it? might be useful for other things.
This article (in german) shows where it is in the options.
Mehr Privatsphäre dank anonymer Wegwerf-E-Mail-Adressen | mailbox.org

Die Wegwerf-E-Mail-Adressen von mailbox.org sind ein gutes Mittel, um die persönlichen Daten vor Missbrauch zu schützen und die Privatsphäre zu wahren.

They documented it here:

https://mailbox.org/en/post/more-privacy-with-anonymous-disposable-e-mail-addresses