Blocking spam is not hard. It’s something I explain to my parents. It’s not a problem I would expect a person with in-demand tech skills to ask about online. I am in those databases too. My email address has been on my web site for a long time, ready to scrape.

I spend no time at all dealing with unwanted recruiter emails, but I’m not getting them from “every startup in the world,” probably because I don’t apply for jobs online or send resumes into automated systems in the first place.

Assuming you sincerely want advice:

1. Use a secondary email address on your resume.

2. Set up filters or use an email client that sorts your mail for you.

3. Reply to the unwanted emails asking to get off the list, if there’s no unsubscribe button.

4. Get an agent or assistant to handle your emails.

I work through an agency that handles the front-line stuff. I mark as spam any automated emails, and respond politely to recruiters who took the time to write a personal email. You never know when you might need that lead.