How to bulk find E-mail from domains?

I am struggling to make my outreach process as effective as possible.

I have seen the process of a lot of affiliate marketers, but not the details.

I was wondering what you guys use to find the emails from different domains?

(I am currently using hunter.io, but oh my the cost hurts a lot, is there a better alternative out there? )

Cheers,

SEOO

According to me, Email Extractor is a better extension to find mail id's. I am using Email Extractor extension from the past few months it is working well...

I used to use a python script called thehatvester.py totally free

Scrapebox can do this. You can either scrape websites for contact info, or scrape whois contact details.