The best alternatives to Kintegra labs are GMass, Growth Marketing Checklists, and Verifier. If these 3 options don't work for you, we've listed a few more alternatives below.
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GMass allows you to easily schedule emails, send out mass emails and mail merge campaigns and more with Gmail! Click here to learn about more features!
Weecheck is a tool validates your emails and helps you avoid bounces. WeeCheck offers immediate and precise check of your email lists, guaranteeing you keep a flawless sender reputation. Scrub your lists clean and lower your bounce rate thanks to WeeCheck.
LeadCrawler finds the email address of a website owner. Enter a website, and it returns the sites contact email. In my testing it finds 34% more emails than Hunter.io and more emails than every other tool I've tried.
BounceHunter is a simple way to clean your email list. If you have a dirty email list, our free analyze tool will tell you that. We utilize hybrid verification, a combination of accept all detection and real-time verification, to provide the most accurate results in the industry.