EmailSearch.io is a simple tool that allows users to search for email addresses based on domain, LinkedIn profile, or company.
They have have a CSV upload and API solution for bulk email searches. Upload your document and have it enriched with contact data in no time!
Find real emails for people at any company. Anymailfinder is a competitor to Hunter and has one key advantage, it only charges for server verified emails. Pattern matched emails are free. You can test it for free.
As any of our own users will know -we're big fans of live 1-on-1 support, and Anymail Finder are pretty good at it.