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uchecker icon

uchecker

uchecker is an email verification service with a set of free email DNS tools attached.

Cost / License

  • Freemium
  • Proprietary

Application type

Platforms

  • Online
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Features

  1.  Email Verification
  2.  Email validation
  3.  Email deliverability
  4.  Email api

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uchecker information

  • Developed by

    uchecker

  • Licensing

    Proprietary and Freemium product.

  • Pricing

    free version with limited functionality.

  • Alternatives

    47 alternatives listed

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  • Supported Languages

    • English

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What is uchecker?

uchecker is an email verification service with a set of free email DNS tools attached.

The paid side takes a .txt or .csv list of up to 9 million addresses per job and returns Good, Bad and Risk lists in one archive, or JSON over the API, at about 3200 addresses a minute. Dead domains are removed automatically and for free, so there is no pre-cleaning step. For every address it keeps the mail server's full reply, so a deleted mailbox reads differently from a frozen account or a full inbox, and anything unresolvable goes to a separate Unknown group instead of being counted as valid.

Access is through a web dashboard, a REST API or a Telegram bot, with an MCP endpoint for AI agents.

The free side is 13 tools for email DNS records, none of which need an account: SPF, DKIM and DMARC checkers, MX lookup, an SPF record validator, an email domain health check, and generators for SPF, DKIM, DMARC, BIMI, MTA-STS and TLS-RPT.