Check an address against the mail server or a verification pipeline before anything is sent to it.
15 listings. Catalog build: 2026-10-17.
Compare the tools below against the input you have, the output you need, and the systems you already use. This list includes tools with and without MCP support.
These matches come from recorded vendor claims. They are a shortlist to investigate, not a performance ranking. A tool's overall test label does not prove it was tested for this task.
Listings are alphabetical. Open a record for dated sources and research notes.
Read this solution shortlist as JSONB2B email verification and deliverability platform - resolves catch-all/secure-email-gateway addresses that legacy verifiers mark "unknown," sends warm-up email to real B2B accounts, and runs hourly SPF/DKIM/DMARC checks with a "Safety Net" that auto-pauses sends to addresses likely to mark mail as spam.
Takes a name plus a company, domain, or LinkedIn URL, verifies the resulting work email against the mail server in real time, and only charges when the email verifies.
A credit-based B2B data lookup service where you feed in a company name, domain, LinkedIn URL, or person and get back an enriched company or contact record including verified emails, through a web app or roughly 40 individual API endpoints.
A France-based, GDPR-oriented contact enrichment and email-finding/verification service that takes a name plus company (name, domain, or LinkedIn URL) and returns a verified professional email plus cleaned company data, with batch processing of up to 250 contacts at once.
Finds and verifies work email addresses and direct phone numbers from a name plus company domain or a LinkedIn URL, charging only when it returns a verified result.
An email finder and verifier that locates a person's work email from a name+domain, domain-only search, or LinkedIn profile URL, verifies deliverability, and can also retrieve a phone number from a LinkedIn URL.
An email-finding and verification tool - given a name, domain, or company, it locates likely professional email addresses (via domain pattern-matching and web-crawled data) and verifies deliverability; also offers bulk domain search and a separate higher-volume "Data Platform" API for larger-scale lookups.
A B2B contact/company data API and CLI that finds and validates work emails, mobile numbers, and social-to-email matches, plus company/job/ad-intelligence lookups, billing only for successful (valid) results.
Sales engagement and lead-gen platform for finding, verifying, and contacting B2B prospects via automated email and LinkedIn campaigns.
A B2B contact database/lookup tool that finds verified work emails and mobile phone numbers for a given person or domain and returns basic firmographic data (headcount, industry, tech stack) for companies; also supports filtered people/company search.
Cold email outreach platform for managing campaigns across many mailboxes, with built-in deliverability infrastructure and a unified reply inbox.
A B2B prospecting and outreach platform - finds and verifies emails/contacts, enriches company and contact records, manages prospect lists and a lightweight CRM, and runs email drip campaigns plus LinkedIn outreach actions.
A B2B contact database and prospecting tool (vendor claims 160M+ contacts, 95% data accuracy) for building lead lists with verified emails, direct dials, and firmographic/technographic filters, with a browser extension and CRM integrations.
An identity-graph append service that turns partial contact records into enriched B2B and B2C profiles, plus audience sizing and real-time email validation.
Pulls verified work emails and mobile numbers for people found on LinkedIn or Sales Navigator and exports them to CSV or a CRM.