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serg-tanichev/README.md

Serhii Tanichev

DevOps and SRE engineer with ten years of production SaaS behind me, and the creator of Email Spam Tester. I run mail infrastructure for a living, and the tester grew out of the checks I kept doing by hand.

Email Spam Tester is a free, independent email deliverability testing tool. You send one message to a disposable address and get 41 checks back, from SPF, DKIM and DMARC alignment to blocklists, two spam engines and the Gmail and Yahoo bulk sender rules, with every warning quoting the RFC section it rests on. Started in 2026, currently free, no signup.

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  1. email-spam-tester email-spam-tester Public

    Email Spam Tester, a free email deliverability testing tool: how to use it from a script or an agent, API examples, MCP client config, agent skill, changelog

    4

  2. email-spam-tester-mcp email-spam-tester-mcp Public

    MCP server of Email Spam Tester, a free email deliverability testing tool: connect an agent, reserve a test address, read 42 checks with RFC citations

    2

  3. email-spam-tester-chatgpt-plugin email-spam-tester-chatgpt-plugin Public

    ChatGPT plugin of Email Spam Tester: check an email before you send it, see which folder it lands in at different providers, and track a whole series

  4. email-spam-tester-cpanel email-spam-tester-cpanel Public

    cPanel & WHM plugin of Email Spam Tester: customers send a real email from their server, get 42 checks, the folder at each provider and the exact DNS records to fix; optional monitoring of every ou…

    Perl

  5. email-spam-tester-plesk email-spam-tester-plesk Public

    Plesk extension of Email Spam Tester, a free email deliverability testing tool: test email sent from the server, 42 checks, folder at 14 providers, DKIM/SPF/DMARC fixes, monitoring

    PHP 1