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Free email checker and email verification with 99.9% accuracy. Reduce bounces, protect sender reputation. 100 free email verification credits daily. | Fresh B2B data via API. Search, enrich & validate contacts, improve deliverability, and scale GTM playbooks. |
Bulk Email Checker, SMTP, Email Spam Checker | b2b-data |
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Clearbit builds business intelligence APIs. Retrieve social data from emails and look up company information from domains.

FullContact offers developers powerful contact management APIs to you turn partial contact information into full contact data. Query by email, phone, or company domain and receive rich company data in response.

Is an AI-driven multichannel outreach platform that reaches prospects where they're most active while keeping every message personal, timely, and effective.

Free email verifier & checker to validate email addresses instantly. Reduce bounces and verify emails in real time.

MTN Email Verifier is a high-performance tool for ensuring that your email communications reach the right inboxes every time. With the rise of email marketing and automated outreach, maintaining a clean list of deliverable email addresses is crucial. MTN Email Verifier combines syntax validation, domain checks, and server-level SMTP verification to deliver a reliable, real-time solution.

Sidemail is an all-in-one email delivery platform for startups that makes sending emails simple. It has everything for delivering and managing emails – email API, transactional emails, email marketing and automation, contact management, no-code email editor, email templates, subscribe forms, and more. Perfect for teams & developers that want reliable deliverability without the bloat. We're based in the EU and GDPR compliant.

Hypermail is a cold email marketing solution. We handle all aspects of email marketing. Whether it is a self service account or if need us to manage the whole campaign. We offer an easy to use platform, with an API, and built for resellers/whitlelabel. In addition, we stay up to date with latest technologies, and offer built AI features to improve your campaigns. Secondary offerings include, email list verification, Smart Relay which allows you to connect multiple esps via SMTP to send your campaigns, B2B data, and last SMS/MMS for political campaigns.

Detect temporary emails with explainable AI. 95%+ accuracy, <500ms API, governance tools, and appeals management. 10 free email checks. Start now.

The most complete SaaS dataset for agencies, SDRs, and marketers. Find companies based on hiring, traffic, and tech stack data - all in one place.

KokoQuest helps users discover and build lists of real companies that match highly specific business criteria. It supports natural-language searches for manufacturers, suppliers, service providers, partners, or customers, and returns ranked company lists with relevance scoring. KokoQuest covers the full workflow from company discovery to contact enrichment and email drafting, allowing users to go from search intent to outreach-ready leads in one place. Through its Gmail integration, the AI can translate a user’s intent into a ranked list of relevant companies, automatically enrich each with contact details, and draft a personalized email ready to send directly from Gmail. Unlike static lead databases, KokoQuest is designed for niche and hard-to-define markets where coverage is inconsistent or incomplete. It is useful for finding regional providers, contract manufacturers, private-label partners, and specialized B2B services that are often missing from traditional sales tools.