MailGuard icon
MailGuard icon

MailGuard

MailGuard is a fast, low-cost email verification API for developers. In a single call it checks email syntax, looks up the domain's MX (mail server) records, detects disposable and role-based addresses, suggests corrections for likely typos (for example gmial.com to gmail.

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Cost / License

  • Freemium (Subscription)
  • Proprietary

Platforms

  • Online
  • Software as a Service (SaaS)
Free email checker and response example
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Features

Properties

  1.  Lightweight
  2.  Privacy focused

Features

  1.  No registration required
  2.  Email Verification
  3.  Ad-free
  4.  No Tracking
  5.  Email Verification API
  6.  REST API
  7.  Email validation
  8.  Email deliverability

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MailGuard information

  • Developed by

    GB flagAnthony Hughes

  • Licensing

    Proprietary and Freemium product.

  • Pricing

    Subscription ranging between $5 and $50 per month + free version with limited functionality.

  • Alternatives

    5 alternatives listed

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  • Supported Languages

    • English

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MailGuard was added to AlternativeTo by Anthony Hughes on and this page was last updated .

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What is MailGuard?

MailGuard is a fast, low-cost email verification API for developers. In a single call it checks email syntax, looks up the domain's MX (mail server) records, detects disposable and role-based addresses, suggests corrections for likely typos (for example gmial.com to gmail.com), and returns a 0 to 100 deliverability score.

It is built to stop fake, mistyped, and throwaway emails at signup, which reduces bounce rates and protects sender reputation. MailGuard runs on Cloudflare Workers with no database, so it is inexpensive to operate. That is passed on as a genuinely free tier (500 checks per month, no card) and paid plans up to 100 times cheaper than the established providers.

It works with any stack over plain REST and ships a zero-dependency TypeScript/JavaScript SDK on npm. There is also a free, no-signup email checker tool and an OpenAPI specification. MailGuard is privacy-first: it does not store the email addresses you verify.

Note: MailGuard performs syntax, MX, and heuristic verification. It does not do live SMTP mailbox probing, which keeps it fast and cheap and is the right level for validating signups.