Yes if you send 1k mails a day, if you send 1 a day or 1 a week even google will pass it through no problem. I send all kinds of test stuff to my own gmail acc

Yes if you send 1k mails a day, if you send 1 a day or 1 a week even google will pass it through no problem. I send all kinds of test stuff to my own gmail accounts and other providers. Unless you send really a lot email or unless someone marks you as a spam it is not an issue. Blocking spammers is about rate limiting, if you are "nigerian prince" - one email a day - is not going to help you finding a person who wants to help you. Ideally you would like to send emails to everyone at once to find that one special person who wants to help you.