InboxGreen
Free email deliverability checker for SPF, DKIM & DMARC
InboxGreen launched on May 27, 2026 with 1 votes.
What it does
Most senders don't know their SPF, DKIM or DMARC is broken until emails start bouncing or landing in spam. InboxGreen checks your domain's DNS records in seconds, no login needed. See what is passing, failing, or missing. The FixKit generates ready-to-paste DNS records for Cloudflare, Namecheap, Google Workspace and Microsoft 365. Includes 28 free DNS tools: blacklist checker, DKIM finder, SPF tester, DMARC analyzer, and more.
Run a free deliverability check, fix SPF/DKIM/DMARC, and get ready-to-paste DNS records for Cloudflare, Namecheap, Google Workspace and Microsoft 365.
SPF, DKIM and DMARC tell Gmail, Outlook and Yahoo whether to trust your domain. Run a free check to see exactly what is passing, what is failing, and what to fix. No signup required. Results in 30 seconds. Works on any domain. A missing or broken SPF record tells Gmail and Outlook your server is not authorized to send for your domain. Campaigns, invoices and password resets get spam foldered or rejected silently. DKIM failure means your messages arrive without cryptographic proof they weren't tampered with. Outlook in particular will quietly move unsigned mail to junk, even when SPF passes. Without DMARC, anyone can spoof your domain and send phishing mail pretending to be you. With it set…from inboxgreen.email
Does a similar job
all alternatives →
DMARC Checker2024 · dmarcchecker.app · ▲70Verify your DMARC, DKIM, and SPF settings with our free checker. Prevent bad actors from impersonating your domain and improve email deliverability.
Email Deliverability API & CheckerAug 2026 · web-production-80c77.up.railway.app · ▲2Instantly audit SPF, DKIM & DMARC to stop landing in spam.
More dev tools this month
the category →
open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 27d ago · github.com
Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 25d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 23d ago · openbot.run
Talanoa▲345Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 20d ago · talanoa.email
CoreSpeed▲332One MCP for everything your agents need: apps, memory, tools
Dev tools · 28d ago · corespeed.io
Source: Product Hunt launch ↗
Launched alongside, May 2026
the whole month →
Parallel agents, diff reviewer, and multi-model comparisons
Dev tools · May 2026 · kilo.ai
Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…
Life & fun · May 2026 · github.com
🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md
Dev tools · May 2026 · github.com