Seamless.AI is a B2B database with a twist. Every time someone performs a search, their AI engine researches and verifies emails and direct dials in real-time, which keeps the data fresh. They also provide an email finder Chrome extension.
They have a pretty unique approach, and while judging by reviews the results are mixed across different niches, it's definitely worth a shot!
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!