For growth marketers and cold-email teams on a budget, MillionVerifier is a bulk email verification tool that checks list validity and deliverability at a low per-verification price for high-volume senders.
Presence & Market Position
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MillionVerifier positions itself as the budget option in email-list verification — bulk cleaning and a real-time API built for teams sending high volumes who want the lowest per-check price rather than the most feature-heavy suite. Most of what comes up about it lives inside outbound and cold-email playbooks, where it's named as one line in a larger deliverability stack: clean the list, verify before sending, then watch bounce and reply rates. Practitioners reference it specifically for bulk list-cleaning ahead of a campaign launch and for holding verification rates above a working threshold before a send goes out. Its presence in that conversation is steady and practitioner-level rather than wide.
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Business Profile
MillionVerifier was founded in 2016 by Tamás Szabó, a deliverability specialist, and has stayed a small, self-funded operation since — about 6 employees running the business today. The company reports $440K in 2025 ARR and an estimated $1.3M valuation, with a base of more than 70,000 businesses using the service, from solo senders cleaning a single list to agencies running it through their own API integrations. It holds ISO 27001 certification and GDPR compliance, credentials aimed at the security-conscious segment of that buyer base. The business has stayed focused on verification as its core product, without expanding into adjacent email-deliverability categories.
Agent Readiness
Measures how easily your agents can build on it — API, MCP, CLI, SDK, docs depth. Methodology →
MillionVerifier ships a REST API with real-time and bulk verification endpoints, documented at a dedicated developer portal, positioned explicitly for technical teams building automated workflows rather than only the web dashboard. It's pushed integrations into sending and marketing platforms like Mailgun, framing verification as a step other tools can call programmatically rather than a manual list-upload task. No MCP server or SDK is on file yet, so agent-native access currently runs through that same API layer.
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