What is the best email finder? Test of the most popular tools.

I wrote a blog post that compares the quality of the most popular e-mail finder tools.

Lots of services on the market, but assuming you have a limited database of domains, which tool returns the largest number of valid emails?

There were some questions about those tools in the past so I hope the topic might be interesting: https://veltis.io/best-email-finder-tool-test/