OptinMonster

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OptinMonster Homepage

Image via OptinMonster

OptinMonster is a popular email collection tool. It uses signup forms, pop-ups, and other tools to capture email addresses and convert website visitors into subscribers.

With its simple interface, you can easily create attractive registration forms using drag-and-drop or ready-made templates.

OptinMonster also helps you understand visitor behavior and improve your conversion rates. Paid plans start at $29.99/month.

Hunter.io
Hunter.io Homepage

Image via Hunter.io

Hunter.io is an email harvesting tool that helps you quickly find gambling data usa email addresses. Simply enter a company's domain or a person's name and company to retrieve their emails.

It also allows you to upload a CSV file to extract multiple emails at once. The tool includes features like an email verifier and tracking system.

Hunter.io offers a free plan for 25 email searches per month, with paid plans starting at $49/month.

UpLead
UpLead Homepage

Image via UpLead

UpLead provides real-time, verified B2B email addresses and phone numbers that enable email collection. It offers a massive database of 155 million leads with 95% data accuracy.

You can use over 50 search filters to find the right contacts and get their email addresses and phone numbers. UpLead also has a Chrome extension to capture leads while you browse the web.