What is DMARC and why does my domain need it?

DMARC (Domain-based Message Authentication, Reporting & Conformance) is a DNS protocol that tells inbox providers what to do when an email fails SPF or DKIM checks. Without DMARC, anyone can send emails pretending to be your domain, leading to phishing attacks and deliverability problems. As of 2024, Google and Yahoo require DMARC for bulk email senders.

What is the difference between SPF, DKIM, and DMARC?

SPF (Sender Policy Framework) lists which mail servers can send email for your domain. DKIM (DomainKeys Identified Mail) adds a cryptographic signature proving the email was not tampered with in transit. DMARC ties them together with a policy telling receivers how to handle messages that fail SPF or DKIM checks, and sends you reports about authentication results.

How does Inbox Insignia monitor email authentication?

Inbox Insignia runs scheduled DNS scans to verify SPF, DKIM, and DMARC configurations, with weekly posture checks on Starter and daily posture checks on Growth and above. Growth includes hourly drift detection, while Agency and above include 15-minute drift detection. It produces a 0-100 compliance score, detects unauthorized changes, identifies unknown senders using your domain, and alerts you through plan-supported channels with step-by-step fix instructions.

Do you offer a free trial?

Yes. Starter and Growth include a 14-day free trial with no credit card required. Starter starts at $39/month for up to 3 domains, Growth starts at $129/month for up to 25 domains with DMARC report analysis and hourly drift detection, and larger Agency Plus, Enterprise, and Enterprise Plus tiers remain visible on the pricing page with sales-assisted checkout.

What is a compliance score?

The Inbox Insignia compliance score is a transparent 0-100 rating that measures how well your domain's email authentication is configured. It checks SPF, DKIM, and DMARC records against industry best practices and deducts points for errors (misconfigured records) and warnings (suboptimal settings). A score of 80+ means your domain passes compliance checks.

What is email authentication drift detection?

Drift detection monitors your DNS authentication records for unexpected changes. If someone modifies your SPF, DKIM, or DMARC records — whether accidentally or maliciously — Inbox Insignia detects the change and alerts you immediately. This prevents email deliverability issues and security gaps before they affect your users.

Continuous monitoring for delivery trust

Protect delivery trust across every domain you send from.

Inbox Insignia keeps SPF, DKIM, and DMARC aligned, flags drift the moment it appears, and gives your team clear operational proof of who can send on your behalf.

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Continuous monitoringDrift detectionSender visibilityGuided remediation

Product proof

A live posture view built for real operating teams.

This control panel previews the calm, high-trust operational view your team gets once monitoring is live.

Sample workspace

acmehealth.com

98 / 100

Aligned

SPF, DKIM, and DMARC aligned across 12 approved senders.

notices.acmehealth.com

91 / 100

Review drift

Unexpected SPF change detected 14 minutes ago with clear rollback guidance.

mail.finservelabs.io

96 / 100

Monitored

Continuous scans active with sender visibility and weekly evidence export ready.

Drift detection that arrives early

Catch DNS changes before they affect delivery, then route the issue to the right owner.

Sender visibility without guesswork

See which services can send on your behalf and where authentication trust is weak.

Fix guidance your team can use

Every finding includes calm, step-by-step remediation instead of vague warnings.

Why teams switch

A calmer operating model for authentication compliance.

Replace scattered spot checks with one branded system for continuous monitoring, sender visibility, and audit-ready proof designed for operations and security teams.

Delivery trust

Keep the protocols that matter aligned without forcing your team into manual DNS review every week.

Sender visibility

Know which tools and teams can send on your behalf, and catch the ones that should not.

Audit-ready proof

Keep evidence, posture summaries, and fix guidance ready for security and compliance review.

One posture view

Replace scattered checks with a single operational picture of authentication health.

Clear scoring and proof

Move from raw DNS data to a measurable posture your team can review and improve.

Calm daily workflow

Monitor the essentials continuously and only escalate when a real change needs action.

Trusted delivery guardrails

Keep sender trust intact as domains, vendors, and internal teams evolve over time.

Get started

Launch in minutes. Stay ahead of drift for good.

Start with the domains that matter most, verify who can send on your behalf, and keep the posture visible as your infrastructure changes.

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Review pricing, use the free tools, or go straight into a monitored workspace.

Step 01

Connect the domains that matter most

Start with the domains and subdomains that carry your highest delivery or compliance risk.

Step 02

Verify alignment and approved senders

Score posture, review sender visibility, and close the gaps that weaken delivery trust.

Step 03

Stay ahead of drift with proof on hand

Keep continuous monitoring running and maintain an audit-ready record of your posture.