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MailFeller Blog

Case studies, guides and product news from the MailFeller team.

🇬🇧EN 🇺🇦UK

MailFeller now has a brain: a valid email on 76% of sites

Emails Finder has been updated. We took 20,000 domains that ran through it before and after the update and compared the results. Numbers and examples inside.

MailFeller Team
09.10.2026 EN / UK

A site's contacts in a second - MailFeller Chrome extension

The Chrome extension shows the addresses on the open page, verifies them and runs a lookup across the whole domain. Same account and same credits as the dashboard.

MailFeller Team
06.10.2026 EN / UK

Finding donors for gambling parasite SEO, the fast way

How to build a list of sites that already accept parasite placements in your GEO in half an hour, filter out the casino sites by topic and pull the contacts for outreach.

Naum Nersesov
03.08.2026 EN / UK