MailLinter

What it does

Free email testing tool with AI-powered deliverability scoring. Test spam scores with SpamAssassin, check WCAG accessibility, and verify compatibility across Gmail, Outlook, Apple Mail & 15+ clients. GPT-4o & Claude analyze all results into prioritized fixes. One Docker command setup.

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  MailTester.AIOct 2025 · ▲328

  Forward an email and get an AI deliverability report in 30s

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  mailX by mailwarmMay 2026 · themailx.com · ▲602

  Email deliverability toolkit for humans and AI agents

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  Unspam AI2024 · ▲385

  See how your subscribers read your emails with our AI inbox

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  MailAdept by mailwarmJul 2026 · mailadept.com · ▲287

  AI Agents & Email deliverability experts on your team

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  Unspam.email2020 · ▲309

  Email spam checker and newsletter heatmap prediction.

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  Mail Tester2016 · ▲307

  Test the spamminess of your email

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  Dograh▲592

  The open source VAPI alternative

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  Meridian▲530

  Don't let your work go unnoticed. Get promoted!

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  x1▲516

  Lovable for iPhone apps go from idea to App Store

  Dev tools · 11d ago · x1.new

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  Computable GPU Index (CGI)▲423

  The first open-source price index for GPU compute

  Dev tools · 10d ago · getcomputable.com

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  Open-Source eInk Bike Computer▲406

  OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.

  Dev tools · 2d ago · opentrailpaper.com

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  The GTM Co-Founder▲402

  Open-source GTM skills for technical founders

  Dev tools · 29d ago · gtmcofounder.com

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  isometric.nyc – giant isometric pixel art map of NYC▲1,325

  Hey HN! I wanted to share something I built over the last few weeks: isometric.nyc is a massive isometric pixel art map of NYC, built with nano banana and coding agents. I didn't write a single line of code. Of course no-code doesn't mean no-engineering. This project took a lot more manual labor than I'd hoped! I wrote a deep dive on the workflow and some thoughts about the future of AI coding and creativity: http://cannoneyed.com/projects/isometric-nyc

  AI · Jan 2026 · cannoneyed.com

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  Cowork▲1,088

  Turn Claude into your digital coworker

  AI · Jan 2026 · claude.com

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  DataFast▲870

  Revenue-first analytics

  Growth · Jan 2026 · datafa.st

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  OpenClaw▲841

  The AI that actually does things

  AI · Jan 2026 · openclaw.ai

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  Kilo Code Reviewer▲801

  Automatic AI-powered code reviews the moment you open a PR

  Dev tools · Jan 2026 · kilo.ai

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  PostSyncer▲795

  AI Content Maker, for Social Media Publishing

  AI · Jan 2026 · postsyncer.com