Domain DMARC Checker

What it does

Protect your domain and boost deliverability with DMARC Defender. Simplify email security with our guided setup wizard and analysis dashboard.

Check your domain for DMARC, SPF, MX, DKIM, BIMI, TLS-RPT, MTA-STS, and other email security records. Domain Check is a free DNS diagnostic tool that scans your domain's DMARC, SPF, DKIM, BIMI, MTA-STS, and TLS-RPT records to uncover email security and deliverability issues. The checker looks for the failures that usually block DMARC enforcement, reduce deliverability, or leave gaps in your sender authentication setup. Real-time DMARC monitoring, aggregate reports, and automated policyfrom dmarcdefender.io

• 
  DMARC Checker2024 · dmarcchecker.app · ▲70

  Verify your DMARC, DKIM, and SPF settings with our free checker. Prevent bad actors from impersonating your domain and improve email deliverability.

• 
  Domain Scan ToolsMay 2026 · domainscan.tools · ▲5

  Detect domain security issues before they hurt your business

• 
  Domain Availability Checker2022 · goonlinetools.com · ▲78

  Check domain and compare prices of best registrars

• 
  ScanMyDomainMar 2026 · scanmydomain.co

  Free domain health scanner — DNS/SSL/SPF/DKIM/DMARC

• 
  DMARC Checker2024 · dmarcchecker.app · ▲5

  Ensure your emails pass DMARC/DKIM/SPF authentication

• 
  DomSec HQSep 2026 · domsechq.com · ▲1

  Instant domain security scanner: SPF, DKIM, DMARC & more

• 
  WallHop – 12ft.io is gone, so I built a replacement▲287

  wallhop is a free paywall bypass. Paste any article link to read it without paywall popups, ads or clutter. No signup, no extension. A simple 12ft.io alternative.

  Growth · 11d ago · wallhop.io

• 
  Prefer▲201

  The execution layer for AEO

  Growth · 23d ago · tryprefer.com

• 
  MakerMap▲197

  A living map of makers and what they’re building

  Growth · 27d ago · makermap.lol

• 
  Brew ▲900

  Like Claude design for email marketing

  AI · May 2026 · brew.new

• 
  Kilo Code for VS Code▲896

  Parallel agents, diff reviewer, and multi-model comparisons

  Dev tools · May 2026 · kilo.ai

• 
  StoreClaw▲806

  Grow your store profits with agents that know how to sell

  AI · May 2026 · storeclaw.ai

• 
  PollyReach▲795

  Give your agent a real number and voice to make calls.

  AI · May 2026 · pollyreach.ai

• 
  Needle: We Distilled Gemini Tool Calling into a 26M Model▲776

  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

• 
  Files.md – Open-source alternative to Obsidian▲730

  🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md

  Dev tools · May 2026 · github.com