MailTooth review
One-time credit packs pair bulk email verification with detailed address checks.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
MailTooth verifies individual email addresses and uploaded CSV or plain-text lists, with checks for syntax, domains, risk, authentication, and mailboxes. It suits sales, recruiting, marketing, product, and data teams that want to assess deliverability before saving contacts, submitting forms, or sending campaigns. A Chrome extension can discover public addresses on webpages, but the documented bulk workflow focuses on verifying lists rather than finding contacts by name, domain, or company.
The product’s emphasis is verification depth. Quick and Standard modes provide different check volumes, while Deepcheck adds SMTP mailbox and catch-all checks. Domain intelligence covers provider, SPF, DKIM, DMARC, blocklist, parked-domain, and WHOIS checks. Teams can also use a REST API for verification, an MCP server for AI-agent workflows, and saved lists with CSV export from the extension. Resend and MCP are listed integrations. That combination fits workflows centered on validating addresses and moving results into existing processes, rather than broad prospect discovery.
According to the vendor’s pricing page, there is no free plan; credit packs are one-time purchases and credits never expire. Starter costs $11 for 3,600 credits, Growth costs $27 for 10,200, Pro costs $72 for 32,600, and Scale costs $111 for 55,000. Each pack includes API, bulk, and MCP access; larger tiers add more checks without changing the one-time model. MailTooth is a practical fit for occasional or batch verification where unused credits should remain available. Teams seeking contact search by person, company, or domain should look for a tool whose documented core workflow includes those discovery methods.
MailTooth pros and cons
- Where it wins
- Bulk-check CSV or plain-text lists with Quick, Standard, or Deepcheck modes
- Deepcheck includes SMTP mailbox and catch-all checks
- One-time credits do not expire and include API, bulk, and MCP access
- Where it doesn't
- The documented bulk workflow verifies uploaded lists, not contact searches
- Chrome extension discovery is limited to public addresses on webpages
- No free plan is offered
MailTooth fact sheet, pricing and score →
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