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Re:Tell HN: LinkedIn is automatically importing job postings... by jjulius on Sunday July 31, 2022 @03:14PM (#32297932)
The ones that really grind my gears are the ones that clearly guessed your current work email address based on your LI profile and standard business email username formats.
Re:Tell HN: LinkedIn is automatically importing job postings... by tedmiston on Sunday July 31, 2022 @04:04PM (#32298312)
Oh for sure. I bet `<first name>@<small company>` or `<first.last>@<company>` goes a very long way.

There are seem to be some techniques for verifying existence of an email address without actually emailing it.

https://stackoverflow.com/questions/565504/how-to-check-if-a...

I tried the below services with a custom G Suite domain and, to my surprise, they successfully worked, even for addresses that I know have never been posted publicly (!).

https://email-checker.net/validate

https://clean.email/verifier/how-to-check-if-an-email-is-val...