Best Lead Intelligence Software for Stackby

ZeroBounce is an email verification platform that scores and delivers emails. It helps businesses improve their inbox placement. The service can detect email typos, abusive and nonexistent email accounts, spam traps, and other potentially dangerous email addresses. ZeroBounce also offers an email scoring service and a suite delivery tools to enhance email inbox placement. ZeroBounce has a military-grade security infrastructure that ensures customer data is kept safe. ZeroBounce has validated over 23 billion emails to date and serves more than 400,000 businesses in 190+ nations. It also adds 200 new clients each day. ZeroBounce validates email lists and reports that they have a 99%+ accuracy rate. They also maintain a good reputation for sending quality. ZeroBounce was ranked no. 851 on Inc. 5000, the list of fastest-growing private businesses in the United States. ZeroBounce rose to number. 40 on the list.

Hunter enables you to quickly discover professional email addresses, facilitating connections with key individuals for your business. Its Domain Search feature generates a comprehensive list of employees working at a specific company, complete with their names and email addresses sourced from the web. With an extensive database of over 100 million indexed email addresses, alongside effective search filters and deliverability assessments, this tool stands out as Hunter's most advanced email discovery option. Simply enter a name to retrieve the verified or most likely email address associated with that individual. Additionally, you can find confirmed email addresses or receive a confidence score represented as a percentage. You have the option to save any email to your leads, export them, or seamlessly integrate them into your preferred CRM system. Each email comes with links to public sources for verification and information on the latest discovery dates. Whether you are looking to reach out to professionals individually or in bulk, the Email Finder utilizes numerous signals to quickly identify the verified or most likely email address of anyone in mere seconds, ensuring you have the tools needed to expand your network efficiently.

Harness the power of comprehensive data to fuel every aspect of your business with Clearbit, the ultimate marketing data engine designed for optimizing customer interactions. Gain profound insights into your clientele, pinpoint potential leads, and tailor each marketing and sales engagement to maximize effectiveness. Trust in our real-time lookups to provide you with timely and precise data, enabling swift action based on the latest information, complete with sales alerts and notifications about job changes. Access detailed company metrics such as employee numbers, technology usage, and industry classifications, along with specific employee information like their roles, levels of seniority, and job transition updates all at your disposal. By leveraging our extensive datasets and advanced machine learning capabilities, you will have everything necessary to successfully convert leads and expand your business. Seamlessly integrate the right data into your current tools, as we designed Clearbit to work fluidly within your existing technology stack, ensuring consistent and cohesive data access for your sales, marketing, and analytics teams. This integration empowers your teams to make informed decisions swiftly, enhancing overall productivity and performance.

Clearout is an AI-powered data quality platform that helps businesses maintain accurate customer & prospect data across sales and marketing systems. Designed for modern GTM teams, it combines email verification, form validation, prospecting, and data enrichment with enterprise-grade compliance, including GDPR, SOC 2 Type II, ISO 27001, and ISO 27701. Its email verification engine delivers 99.73% accuracy using 20+ validation checks, including SMTP verification, MX record analysis, spam trap detection, disposable email identification, catch-all verification, typo correction, and domain intelligence. AI-powered insights help teams assess contact quality and outreach risk. Form Guard validates email addresses, phone numbers, and names in real time during form submissions, helping prevent invalid or incomplete records from entering CRM and marketing systems. Clearout’s Data Pulse extends this protection to CRMs by automatically validating new contact records as they are created. Verifying emails, phone numbers, and names in real time, it helps reduce data decay, improve CRM integrity, and maintain higher-quality datasets. A 14-day free trial is available for teams to evaluate its impact before committing. Clearout also supports prospecting through its Email Finder, LinkedIn Email Finder Chrome Extension, and AI-powered search capabilities, enabling users to discover pre-verified professional email addresses and build targeted prospect lists. With APIs, webhooks, native integrations, Google Sheets support, and Okta SSO, Clearout enables organizations to validate, enrich, and maintain contact data at scale. Today, more than 80,000 businesses rely on Clearout to improve data quality and support scalable GTM operations.

Snov.io is a multichannel lead generation and outreach automation platform that helps B2B teams find qualified leads, automate email and LinkedIn campaigns, and manage deals in one built-in CRM.

FullContact is a real-time, privacy-safe Identity Resolution company building trust between people and brands. We deliver the capabilities needed to create tailored customer experiences, improve ad targeting and measurement as well as improve identity verification and fraud solutions by unifying data and applying insights in the moments that matter. FullContact provides the data + intelligence you need in your platforms to accurately identify people and optimize experiences—while putting privacy and security first.