Who should use DMARC Defender?

DMARC Defender is a B2B product built for IT administrators.

Does DMARC Defender have a free plan?

Yes — DMARC Defender is free to use.

What platforms does DMARC Defender run on?

DMARC Defender runs on the web.

Is DMARC Defender still active?

Unverified. DMARC Defender has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to DMARC Defender?

Similar projects tracked by PulseGate include Dmarc Checker App, yourDMARC, and DMARCinator.

Who makes DMARC Defender?

DMARC Defender is developed by DMARC Defender.

How long has DMARC Defender been around?

DMARC Defender first shipped in 2023.

Back to the index

DMARC Defender

Name: DMARC Defender
Author: DMARC Defender

dmarcdefender.ioSecurity & compliance platforms

Domain Check Tool by DMARC Defender allows IT administrators to scan and analyze their domain's email authentication records, including DMARC, SPF, DKIM, BIMI, TLS-RPT, and MTA-STS. It highlights misconfigurations, missing protections, and policy weaknesses to improve email security and deliverability.

FreeWebCloud-managed

Visit dmarcdefender.io

Overview

10 features

DMARC Defender is a Security & compliance platforms project. It focuses on ensuring domains have correct email authentication and security records to prevent spoofing and deliverability issues. It is built as a B2B product for IT administrators. DMARC Defender costs nothing to use. DMARC Defender is available on the web.

Behind DMARC Defender is DMARC Defender, and it first shipped in 2023. Among its 10 catalogued features are DNS lookup, SPF check, and DKIM check.

Summary written by a language model from the project’s public pages.

DNS lookup
SPF check
DKIM check
DMARC analysis
BIMI validation
TLS-RPT check
MTA-STS check
Syntax validation
Policy analysis
Issue detection

Built with & integrations

Framework

Next.js

Hosting

Vercel

Runs on

BrowserCloud-managed

Detected from

Next.js: x-powered-by header · /_next/static/ in the HTML · __next_f in the HTML
Vercel: x-vercel-id header · x-vercel-cache header

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tier

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed26 Jun · 18:32 UTC
Listing verified against its public source
Source: PulseGate · Open

Frequently asked questions about DMARC Defender

What is DMARC Defender?: DMARC Defender focuses on ensuring domains have correct email authentication and security records to prevent spoofing and deliverability issues. It is catalogued under Security & compliance platforms on PulseGate.
Who should use DMARC Defender?: DMARC Defender is a B2B product built for IT administrators.
Does DMARC Defender have a free plan?: Yes — DMARC Defender is free to use.
What platforms does DMARC Defender run on?: DMARC Defender runs on the web.
Is DMARC Defender still active?: Unverified. DMARC Defender has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to DMARC Defender?: Similar projects tracked by PulseGate include Dmarc Checker App, yourDMARC, and DMARCinator.Dmarc Checker App yourDMARC DMARCinator
Who makes DMARC Defender?: DMARC Defender is developed by DMARC Defender.
How long has DMARC Defender been around?: DMARC Defender first shipped in 2023.

At a glance

Pricing: Free
Platforms: Web
Languages: English
Built for: IT administrators
Model: B2B
Solves: Ensuring domains have correct email authentication and security records to prevent spoofing and deliverability issues.

Index record

Identity confidence: High · 95
Indexed: 26 Jun 2026
Lifecycle: Alive
Last seen: 26 Jun 2026

Identity audit (12)

Slug: domain-check-tool-dmarc-defender-dmarcdefender-io
Lifecycle last checked: 8 Aug 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 26 Jun 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Canonical URL: https://dmarcdefender.io/tools/domain-check

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