Top 18 Email Verification Software Companies With $1M–$5M Revenue (August 2026)

San Francisco, California, United States

Clearout is your all-in-one solution for email verification, email finding, and prospecting. We understand the importance of a clean email list for successful email marketing, which is why we offer a reliable email verification and validation service to keep your database hygiene. By removing bad or fraudulent email addresses, we help you improve your email reputation and increase deliverability, ensuring your emails reach the intended recipients' inbox. But that's not all, Clearout offers AI-based Sales Intelligence Services which including finding email addresses and efficiently reaching out to target prospects. With a few clicks, you can easily find pre-verified email addresses of your prospects on LinkedIn or within our app by providing just the name and company name. Resulting in effortless growth of your email list with genuine and responsive leads. Using Clearout will enable you to maintain your domain's reputation while saving time and money, keeping your ESP(s) and CRM(s) happy.

Newark, Delaware, United States

Wiza makes prospecting magical. The only sales prospecting platform that verifies email addresses in real-time and allows you to bulk export prospect lists from LinkedIn.

Covina, California, United States

For more than 14 years, WhoisXML API has gathered, analyzed, and correlated domain, IP, and DNS data for a more secure and transparent Internet. We offer a vast selection of domain/IP/DNS data feeds, APIs, research and monitoring web tools and cyber threat intelligence. Our coverage includes 21+ billion historical WHOIS records across 7596+ TLDs and ccTLDs, 50+ billion domains and subdomains, 10.4+ million IP netblocks, 99.5% of IPs in use, and 116+ Billion DNS records gathered from over a decade of data aggregation. Our products and intelligence sources can support all types of security companies, enterprises, and experts to empower next-generation cybersecurity processes and as a building block for thorough online cybercrime investigations. We are a cyber threat intelligence provider trusted by over 50,000 clients and have been ranked one of Inc. 5000 fastest growing IT companies since 2017. Our customer base includes commercial security platforms (SIEM, SOAR, and TIP), Security Operations Centers (SOCs), Managed Security Service Providers (MSSPs), Fortune 1000 companies, top cybercrime & law enforcement units, government agencies, banks, payment processors, telcos, and brand protection agencies. We also work closely with domain registries/registrars, domain investors/brokers, marketing researchers, big-data warehouses, web analytics firms, investment funds, VC firms, SMBs with a digital footprint, and more.

Radom, Mazowieckie, Poland

W PROSPEO wspieramy naszych Klientów we wdrażaniu nowoczesnych systemów Comarch ERP XL i Comarch ERP Optima, które pomagają w sprawnym zarządzaniu przedsiębiorstwem we wszystkich obszarach prowadzonej działalności. Jesteśmy z Wami od pierwszego pomysłu, aż do finalizacji wdrożenia i obsługi powdrożeniowej. Dzięki naszemu doświadczeniu cały proces przebiega sprawnie, a proces wdrożenia nie wpływa na funkcjonowanie firmy. Dostarczamy dedykowane rozwiązania. BO WIEMY JAK! • WIEMY JAK analizować potrzeby Twojej firmy i dobierać do nich odpowiednie rozwiązania. • WIEMY JAK wykorzystać potencjał nowoczesnych technologii i narzędzi na każdym etapie rozwoju Twojej firmy. • WIEMY JAK dzielić się specjalistyczną wiedzą w ramach szkoleń i cyklicznych webinarów. • WIEMY JAK dobrać odpowiedni sprzęt, abyś mógł w pełni wykorzystać możliwości systemu. • WIEMY JAK dostosować oprogramowanie dla Ciebie i Twojej firmy, stosując nieszablonowe rozwiązania. Zwieńczeniem naszej pracy wdrożeniowej są nagrody: Comarch Partner Roku, Comarch Lider Sprzedaży, Diamenty Miesięcznika Forbes, a ponadto referencje od Klientów z różnych branż. Poznaj możliwości nowoczesnych technologii z PROSPEO!

Bhopal, Madhya Pradesh, India

At Pabbly, we offer a variety of tools that a business would need to grow and scale. People throughout the past few years have opted for our services over some of the leading brands. Why? Because we build exceptional products and offer them at reasonable prices with great customer support! Our popular products include:- Pabbly Connect: https://www.pabbly.com/connect/ Pabbly Subscription Billing: https://www.pabbly.com/subscriptions/ Pabbly Email Marketing: https://www.pabbly.com/email-marketing/ Pabbly Email Verification: https://www.pabbly.com/form-builder/ Pabbly Form Builder: https://www.pabbly.com/form-builder/

Brussels, Belgium

Overloop AI transforms outbound prospecting by combining AI-powered automation with simplicity. Build smarter campaigns, personalize at scale, and save 90% of your time.

Newton, Massachusetts, United States

Vitanur strives to help businesses realize their full potential and capitalize on it via the help of the internet. We do such by providing customized solutions that will be the right fit for you and differentiate you from the competition. Our teams goal is to provide high quality digital solutions in a timely manner that are for your betterment.

Wexford, Pennsylvania, United States

Webbula is the undisputed industry leader in data quality technology. Our Data Enrichment, Audience Targeting, and Email Hygiene services mitigate delivery threats, enhance data lists for email campaigns and create actionable audiences for online ad serving. Webbula has a proven track record of helping our customers navigate hazardous data quality obstacles and increase their return on investment. Our passion remains what it has been since day one, to help our customers market confidently. Webbula pioneered and perfected multi-method email hygiene, the ability to detect Spam Traps, and much more – all in pursuit of truth in data. Visit our website and learn why thousands of businesses rely on Webbula.

Santa Barbara, California, United States

Businesses look to Service Objects when they want to be sure every contact record in every database is as genuine, accurate, and up-to-date as it possibly can be. We are specialists in real-time customer contact validation, providing tools that clean, factualize and enhance prospect and customer contact data. We help businesses make better decisions about the customers they serve. Consistently recognized for our best-in-class, unlimited 24/7/365 customer service, we also provide guaranteed 99.999% uptime and bank-grade transaction security. Service Objects has validated over 6 billion contacts, and major brands such as American Express, Microsoft and Amazon rely on us for their Customer Data Validation needs. To learn more about Service Objects, visit www.serviceobjects.com.

Miami, Florida, United States

The team behind the email verification tool you’ve been searching for. We’re a team of marketers and developers creating products that we actually want to use. Emailable was built because we understand that email verification is important. It shouldn’t be expensive and hard to manage. It should be an essential step in any email marketing strategy. We wanted a more affordable, faster, and user-friendly email verification solution for ourselves, so we built it for you.