Cute, I assume it start SMTP sessions with different cobinations and checks if the server does not return an error after corresponding RCPT TO. It will not work with "catch-all" servers.
Hint for inproovement - so far it does not find emails with numbers like John123@gmail.com
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Cute, I assume it start SMTP sessions with different cobinations and checks if the server does not return an error after corresponding RCPT TO. It will not work with "catch-all" servers. Hint for inproovement - so far it does not find emails with numbers like John123@gmail.com