How to scrape agency/coaching/consulting leads from twitter?

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They tend to point to a website in their bio. I would scrape that, then scrape their email. And/or send a generic contact form request and scrape the reply email contact.

I personally hate scraping websites for emails. Unless you scrub this list heavily, you'll end up with a very poor quality list.

You can use tools to scrape the websites they link to, usually links from their profile or something valuable on their page itself.