Is missing email authentication hurting your deliverability?

DMARC report monitoring and email deliverability tools. No IT expertise required.

Benefits

One platform for managing email authentication across all your domains

Compliance

Meet Google & Yahoo! Sender Requirements

Satisfy Google and Yahoo bulk sender requirements with guided DMARC, SPF, and DKIM setup that keeps your domain ready to send.

Zero-Code Setup
Copy and paste the exact DNS records you need with guided setup. No IT expertise required.
Validator
Run a comprehensive validation suite to confirm your DMARC, SPF, and DKIM setup is fully aligned.
Continuous scanning
Hourly scans catch DNS or authentication issues before they turn into deliverability problems.
Sender Requirements Validator
DMARC Checks: 11/11
SPF Checks: 12/12
DKIM Checks: 4/4
Bulk Sender Status
Google logoPass
Yahoo logoPass

Enforce

Prevent domain impersonation

See who is abusing your domains, understand the risk, and move to enforcement with clear delivery estimates before you publish changes.

Analytics Dashboard
Understand which domains are being abused, where abuse is coming from, and how much volume is at risk.
Upgrade Wizard
Upgrade your DMARC policy toward reject with an estimated delivery impact before you enforce it.
Report Enrichment
Layer in abuse scores and message classification so you can separate real senders from spoofing noise.
Upgrade Wizard

v=DMARC1; p=reject; rua=mailto:demo@dmarcdefender.io

213
Threats Blocked

Deliverability

Improve Deliverability

Keep every sending platform authenticated so campaigns keep sending while unauthorized or misconfigured sources stand out fast.

Auto-discover Sending Tools
See every platform sending emails on your behalf, automatically mapped out.
Fix Wizard
Automatically detect and recommend fixes for your sending channels.
Notify on misconfiguration
Get alerted when an authorized sender falls out of compliance so you can fix it before it impacts your campaigns.
Fix Wizard

Detected senders that need fixes for SPF or DKIM.

SourceDomainVolumeSPFDKIM
HubSpot
HubSpot
acme.com42,180
SendGrid
SendGrid
marketing.acme.com18,240
Mailchimp
Mailchimp
outbound.acme.com9,870

BIMI

Display your brand in the inbox

Turn BIMI into a repeatable brand channel with the tools to host assets, convert files, and manage records in one place.

Hosting
Meet BIMI hosting requirements like TLS, caching, and permanence without relying on a separate asset workflow.
File Conversion
Convert existing SVG files into BIMI-compatible Tiny 1.2 P/S format with built-in tooling.
Policy Manager
Set up and manage your BIMI record with the policy wizard.
LOGO

Acme Product

hello@acme.com

Welcome to Acme! Do you like our logo that just says logo?

9:41 AM

How It Works

One DNS change away

Under the hood we collect and aggregate your DMARC XML reports so you can see your sender health in one place and keep your legitimate email flowing.

Step 1

Update DNS

We update your DMARC record to point to our report collection infrastructure.

_dmarc.yourdomain.com

v=DMARC1; p=reject; rua=mailto:demo@in.dmarcdefender.io

Step 2

Aggregation Reports

Email servers such as Google, Yahoo, Microsoft, and other providers send us your DMARC XML aggregate reports.

google.xml
yahoo.xml
microsoft.xml

Step 3

Insights

We analyze the DMARC reports and provide insights and recommendations.

97%
3%
Deliverability

FAQ

Frequently asked questions

Stuart, founder of DMARC Defender

Stuart Larsen

Founder / Engineer

Still Have Questions?

Hi, I'm Stuart, founder of DMARC Defender. I like making security simple.

I'm a solo founder, so please contact me directly. This is what I do and I'd love to help.

Ready to get started?

Start your free trial today and see how DMARC Defender can help you improve your email deliverability and protect your brand reputation.

Benefits

  • Continuous deliverability monitoring
  • Fulfil Google/Yahoo sender requirements
  • Prevent Brand Impersonation
  • Improve Deliverability