# DMARCguard

> Email authentication platform monitoring DMARC, SPF, DKIM, BIMI, MTA-STS, TLS-RPT, ARC, DANE, and ARF from one dashboard. SaaS at dmarcguard.io.

## About

DMARCguard is an email authentication monitoring and compliance platform. It processes DMARC aggregate reports, validates DNS records for 9 email security protocols, and provides actionable remediation guidance — all from a single dashboard.

The platform is available as a managed cloud SaaS at [dmarcguard.io](https://dmarcguard.io). Rated 4.9/5 on [G2](https://www.g2.com/products/dmarcguard) (9 reviews).

The DMARC report parser ([https://github.com/dmarcguardhq/dmarcguard](https://github.com/dmarcguardhq/dmarcguard)) is open-source. The full platform — including the dashboard, alerting, compliance scoring, MCP integration, and multi-org support — is proprietary.

### What DMARCguard Does

- Parses and visualizes DMARC aggregate reports (RFC 9990)
- Validates DNS records for SPF, DKIM, BIMI, MTA-STS, TLS-RPT, ARC, and DANE
- Identifies sending sources automatically (170+ services via CIDR and rDNS matching)
- Calculates per-domain compliance health scores
- Generates step-by-step remediation guidance personalized to each domain's DNS state
- Sends email and webhook alerts on policy failures with configurable thresholds
- Exposes 17 MCP tools for AI assistant integration (Claude, ChatGPT, Cursor, etc.)

## Protocols

DMARCguard monitors 9 core email authentication protocols and 8 supporting systems.

### Core Protocols

| Protocol | RFC | Purpose |
|----------|-----|---------|
| DMARC | RFC 9989 | Domain-based Message Authentication, Reporting & Conformance |
| SPF | RFC 7208 | Sender Policy Framework — authorized sending IP validation |
| DKIM | RFC 6376 | DomainKeys Identified Mail — cryptographic message signing |
| ARC | RFC 8617 | Authenticated Received Chain — authentication across forwarding |
| TLS-RPT | RFC 8460 | TLS Reporting — SMTP TLS failure diagnostics |
| BIMI | Draft | Brand Indicators for Message Identification — logo in inbox |
| MTA-STS | RFC 8461 | Mail Transfer Agent Strict Transport Security — TLS enforcement |
| DANE/TLSA | RFC 7671 | DNS-Based Authentication of Named Entities — certificate pinning |
| ARF | RFC 5965 | Abuse Reporting Format — forensic failure reports |

### Supporting Systems

- **DNSBL** — DNS-based blocklist monitoring for sending IP reputation
- **Certificate Transparency** — CT log monitoring for domain certificates
- **Email Format Validation** — RFC 5322 compliance checking
- **IP Reputation** — AbuseIPDB integration for sender reputation scoring
- **Sender Identification** — Automatic detection of 170+ email services
- **Anomaly Detection** — Statistical baseline monitoring for traffic patterns
- **Deliverability Scoring** — Multi-factor email deliverability assessment
- **Remediation Engine** — Step-by-step fix guidance for 22+ email services

## Features

### Dashboard & Reporting
- Aggregate DMARC report visualization with source breakdown
- Per-domain compliance health score (0-100)
- Trend analysis across time periods
- Geographic IP mapping (GeoIP enrichment)
- CSV and JSON data export

### DNS Validation
- Real-time DNS record checking for all 9 protocols
- Syntax validation against RFC specifications
- Personalized fix recommendations based on current DNS state
- One-click navigation to exact DNS configuration pages

### Alerting
- Email alerts for DMARC policy failures
- Webhook integration for external systems
- Configurable thresholds and cooldown periods
- Per-organization alert settings

### AI Integration
- 17 MCP (Model Context Protocol) tools for AI assistants
- Query compliance scores, DNS records, and trend data conversationally
- Compatible with Claude, ChatGPT, Cursor, and any MCP-compatible client
- Both stdio and HTTP/SSE transport modes

### Multi-Organization
- Per-organization settings, SMTP overrides, and IMAP credentials
- AES-256-GCM encryption for stored credentials
- Ownership transfer between organization members
- Role-based access (owner, admin, viewer)

## Pricing

Per-domain pricing. No per-email-volume caps.

| Feature | Free | Pro | Enterprise |
|---------|------|-----|------------|
| Price | Free | $29/mo including 2 domains ($290/yr annual), then $15/domain | Custom |
| Founding rate | – | $14.50/mo including 2 domains ($145/yr annual), then $7.50/domain (3–10) and $5/domain (11+) | – |
| Additional domains | 2 domains max | 3–10: $15/domain ($7.50 founding) · 11+: $10 ($5 founding) | Unlimited |
| Users | 1 | 10 | Unlimited |
| Data retention | 30 days | 1 year | Unlimited (you control retention) |
| Protocols | 7 | All 9 | All 9 |
| AI queries | 5/day | Unlimited | Unlimited + MCP API |

### Founding Member Pricing

First 25 customers lock in founding rates for 2 years. After that, they keep a permanent 15% alumni discount — forever.

- Entry: $14.50/mo or $145/yr, including 2 domains (2 months free)
- Domains 3–10: $7.50/domain/mo or $75/domain/yr
- Domains 11+: $5/domain/mo or $50/domain/yr
- Price lock: 24 months from signup
- Alumni rate: 15% off standard pricing, permanent, after the lock
- Stated at signup — no surprises, no renegotiation

### Add-Ons (Pro plan)

- **Hosted DNS** ($12/domain/mo): Hosted DMARC, SPF, and DKIM records, Dynamic SPF flattening, Hosted MTA-STS, BIMI, and TLS-RPT, Cloudflare DNS integration with drift detection

All plans include: DMARC aggregate reporting, compliance health scoring, email alerts, 2FA, and the free tool suite.

- [Pricing page](https://dmarcguard.io/pricing/)
- [Sign up free](https://app.dmarcguard.io/register)

## Free Tools

47 free email authentication tools. No signup required.

### [DMARC Record Checker](https://dmarcguard.io/tools/dmarc-checker/)

Validate your DMARC DNS record, check policy settings (p=none/quarantine/reject), and verify reporting configuration (rua/ruf). Detects syntax errors, missing fields, and common misconfigurations per RFC 9989.

### [SPF Record Checker](https://dmarcguard.io/tools/spf-checker/)

Analyze your SPF record for syntax errors, DNS lookup limits (10-lookup cap per RFC 7208), and authorized sender coverage. Identifies over-permissive mechanisms like +all.

### [DKIM Record Checker](https://dmarcguard.io/tools/dkim-checker/)

Verify DKIM key records by selector, check key length (1024/2048-bit), and validate cryptographic setup per RFC 6376.

### [BIMI Record Checker](https://dmarcguard.io/tools/bimi-checker/)

Check your BIMI DNS record, validate SVG logo requirements (SVG Tiny PS format), and verify VMC (Verified Mark Certificate) setup.

### [MTA-STS Checker](https://dmarcguard.io/tools/mta-sts-checker/)

Validate your MTA-STS policy file, check the _mta-sts DNS record, and verify TLS enforcement mode (testing/enforce) per RFC 8461.

### [TLS-RPT Record Checker](https://dmarcguard.io/tools/tls-rpt-checker/)

Verify your TLS-RPT DNS record and check reporting endpoint configuration (mailto: and https: URIs) per RFC 8460.

### [ARC Readiness Checker](https://dmarcguard.io/tools/arc-checker/)

Assess your domain's ARC readiness by checking DMARC enforcement, mail provider capabilities, and DKIM key availability at common ARC selectors per RFC 8617.

### [ARF / Forensic Report Checker](https://dmarcguard.io/tools/arf-checker/)

Validate your domain's DMARC forensic reporting configuration — check ruf= destinations, external authorization records, failure options, and provider compatibility per RFC 5965 and RFC 9991 §5.

### [ARC Chain Analyzer](https://dmarcguard.io/tools/arc-chain-analyzer/)

Parse and visualize ARC authentication chain headers. Validate chain integrity across mail forwarding hops per RFC 8617.

### [DNS Record Lookup](https://dmarcguard.io/tools/dns-lookup/)

Query any DNS record type for any domain — A, AAAA, MX, NS, TXT, PTR, CNAME, SOA, CAA, SRV, DS, DNSKEY, TLSA, HTTPS — entirely client-side via Cloudflare DoH. Includes DNSSEC validation status and an "ALL" tab that fans out across every record type at once.

### [MX Record Lookup](https://dmarcguard.io/tools/mx-lookup/)

Check the mail servers that handle a domain's inbound email — priority, hostnames, TTL, and configuration errors. Detects RFC 2181 §10.3 violations (CNAME at MX target), missing records, and dangling targets. RFC 1035 + RFC 5321.

### [CNAME Record Lookup](https://dmarcguard.io/tools/cname-lookup/)

Inspect canonical name aliases and walk the resolution chain. Catches apex CNAMEs (RFC 2181 §10.1 violation), dangling targets, and CNAME-MX violations. Useful for verifying DKIM selector delegation, BIMI assertion records, and SES/Mailgun/Postmark domain verification.

### [TXT Record Lookup](https://dmarcguard.io/tools/txt-lookup/)

Inspect TXT records with inline detection of SPF, DKIM, DMARC, MTA-STS, BIMI, TLS-RPT, and verification tokens. Surfaces split-string corruption, multiple-SPF violations (RFC 7208 §3.2), and quote-escaping bugs.

### [Reverse DNS Lookup](https://dmarcguard.io/tools/reverse-dns-lookup/)

Resolve any IPv4 or IPv6 address back to its hostname via PTR records. Supports FCrDNS verification per RFC 7001, generic-PTR detection, and Spamhaus PBL diagnostics for email sender reputation.

## Comparisons

### [DMARCguard vs Valimail](https://dmarcguard.io/compare/valimail/)

Valimail pricing starts at $5,000/year for Enforce Starter (annual-only), and the Align tier was retired after the September 2025 DigiCert acquisition — leaving a $0-to-$5,000 gap between free Monitor and the first paid plan. Valimail remains the enterprise DMARC leader; DMARCguard delivers broader protocol coverage including ARC and DANE at per-domain pricing, with full data portability and no DNS delegation lock-in.

| Feature | DMARCguard | Valimail |
|---------|------------|----------|
| DMARC Monitoring | Yes | Yes |
| SPF Validation | Yes | Yes |
| DKIM Validation | Yes | Yes |
| BIMI Support | Yes | Yes |
| MTA-STS Validation | Yes | Yes |
| TLS-RPT Support | Yes | Yes |
| ARC Chain Support | Yes | No |
| Sender Identification | Yes | Yes |

**Why switch:** ARC free, DANE from Pro · No CNAME or DNS delegation lock-in · No $0-to-$5,000 cliff · AI-native with MCP

---

### [DMARCguard vs EasyDMARC](https://dmarcguard.io/compare/easydmarc/)

EasyDMARC pricing starts at $44.99/mo for the 2-domain Plus plan; around 2024 the free tier was reduced to 1 domain, 1,000 emails/month, and 14 days of history. DMARCguard offers simpler pricing and broader protocol coverage — 7 protocols free, all 9 from Pro.

| Feature | DMARCguard | EasyDMARC |
|---------|------------|-----------|
| DMARC Monitoring | Yes | Yes |
| SPF Validation | Yes | Yes |
| DKIM Validation | Yes | Yes |
| BIMI Support | Yes | Yes |
| MTA-STS Validation | Yes | Yes |
| TLS-RPT Support | Yes | Yes |
| ARC Chain Support | Yes | No |
| Sender Identification | Yes | Yes |

**Why switch:** Transparent pricing, full coverage · Full protocols, simple pricing · Per-domain pricing from day one · AI-ready with MCP

---

### [DMARCguard vs dmarcian](https://dmarcguard.io/compare/dmarcian/)

dmarcian pricing runs $24–$600/mo across volume-metered tiers with hard domain caps — and the Basic→Plus step is a 10x jump ($24→$240/mo). DMARCguard covers 9 protocols with transparent per-domain pricing that scales continuously.

| Feature | DMARCguard | dmarcian |
|---------|------------|----------|
| DMARC Monitoring | Yes | Yes |
| SPF Validation | Yes | Yes |
| DKIM Validation | Yes | Yes |
| BIMI Support | Yes | No |
| MTA-STS Validation | Yes | Yes |
| TLS-RPT Support | Yes | Yes |
| ARC Chain Support | Yes | No |
| Sender Identification | Yes | Yes |

**Why switch:** Beyond DMARC · No 10x tier cliff · Full data portability · AI-native with MCP

---

### [DMARCguard vs PowerDMARC](https://dmarcguard.io/compare/powerdmarc/)

PowerDMARC pricing scales $8–$250/mo on the Basic plan by email volume, with Enterprise quote-only. DMARCguard matches its broad protocol coverage while adding ARC chain validation, single-pane multi-tenant management, and automatic sender identification.

| Feature | DMARCguard | PowerDMARC |
|---------|------------|------------|
| DMARC Monitoring | Yes | Yes |
| SPF Validation | Yes | Yes |
| DKIM Validation | Yes | Yes |
| BIMI Support | Yes | Yes |
| MTA-STS Validation | Yes | Yes |
| TLS-RPT Support | Yes | Yes |
| ARC Chain Support | Yes | No |
| Sender Identification | Yes | Yes |

**Why switch:** Full data portability · Zero-config sender detection · ARC chain analysis · Transparent refund and cancellation

---

### [DMARCguard vs MXToolbox](https://dmarcguard.io/compare/mxtoolbox/)

Looking for an MXToolbox alternative for continuous DMARC monitoring? MXToolbox built the internet's favorite free DNS toolbox, but Delivery Center costs $129/mo for 5 domains, caps DMARC history at 90 days, and has no public pricing page — the price surfaces only on its upgrade pages. DMARCguard monitors 9 protocols with published per-domain pricing.

| Feature | DMARCguard | MXToolbox |
|---------|------------|-----------|
| DMARC Monitoring | Yes | Yes |
| SPF Validation | Yes | Yes |
| DKIM Validation | Yes | Yes |
| BIMI Support | Yes | Yes |
| MTA-STS Validation | Yes | No |
| TLS-RPT Support | Yes | No |
| ARC Chain Support | Yes | No |
| DANE/TLSA Support | Yes | No |

**Why switch:** Audit-ready history · Protocol coverage that keeps going · The 5-domain math · Billing you can see and leave

---

### [DMARCguard vs Proofpoint](https://dmarcguard.io/compare/proofpoint/)

Proofpoint Email Fraud Defense pairs hosted DMARC with genuinely unmatched threat intelligence — at enterprise prices published nowhere in USD. The only verifiable list prices are UK G-Cloud figures: £22,901/yr for a single sending domain. DMARCguard covers 9 protocols at a published per-domain price.

| Feature | DMARCguard | Proofpoint |
|---------|------------|------------|
| DMARC Monitoring | Yes | Yes |
| Hosted DMARC Record | Yes | Yes |
| SPF Management | Yes | Yes |
| DKIM Validation | Yes | Yes |
| BIMI Support | Yes | Yes |
| MTA-STS Validation | Yes | No |
| TLS-RPT Support | Yes | No |
| ARC Chain Support | Yes | No |

**Why switch:** Compare the published prices · No bundle required · Data portability by default · The modern transport stack

---

### [DMARCguard vs Mimecast](https://dmarcguard.io/compare/mimecast/)

Mimecast DMARC Analyzer 2.0 (January 2026) is a real upgrade — hosted SPF/DMARC/DKIM delegation and TLS-RPT reporting. But the price appears nowhere on mimecast.com, tiers by your domain's web-traffic profile, and renewals carry a contractual uplift. DMARCguard publishes one per-domain price.

| Feature | DMARCguard | Mimecast |
|---------|------------|----------|
| DMARC Monitoring | Yes | Yes |
| Hosted DMARC Record | Yes | Yes |
| SPF Flattening / Hosting | Yes | Yes |
| DKIM Validation | Yes | Yes |
| TLS-RPT Support | Yes | Yes |
| Forensic (RUF) Reports | Yes | Yes |
| BIMI Support | Yes | No |
| MTA-STS Hosting | Yes | No |

**Why switch:** Priced per domain, not per Alexa rank · A locked price vs an uplift clause · Exit without data loss · DMARC-first, not an add-on

---

### [DMARCguard vs Barracuda](https://dmarcguard.io/compare/barracuda/)

Barracuda folds DMARC reporting into its Email Protection bundles — priced per mailbox with 25-seat reseller minimums, guided setup but no automated enforcement, and five protocols missing entirely. DMARCguard prices per domain and monitors all 9 protocols.

| Feature | DMARCguard | Barracuda |
|---------|------------|-----------|
| DMARC Monitoring | Yes | Yes |
| Guided Path to Enforcement | Yes | Yes |
| SPF Management | Yes | Guidance only |
| DKIM Management | Yes | Guidance only |
| BIMI Support | Yes | No |
| MTA-STS Validation | Yes | No |
| TLS-RPT Support | Yes | No |
| ARC Chain Support | Yes | No |

**Why switch:** Domain math, not mailbox math · From reporting to done · The full protocol stack · An honest fit note

---

### [DMARCguard vs Red Sift](https://dmarcguard.io/compare/redsift/)

Red Sift OnDMARC is a genuinely strong platform: Dynamic SPF, in-app VMC issuance, and support quality G2 reviewers consistently praise. But only one tier has a public price, aggregators still show conflicting older figures, and DANE sits outside the product. DMARCguard publishes one per-domain price and monitors the full stack.

| Feature | DMARCguard | Red Sift |
|---------|------------|----------|
| DMARC Monitoring | Yes | Yes |
| SPF Flattening / Hosting | Yes | Yes |
| DKIM Validation | Yes | Yes |
| BIMI Support | Yes | Yes |
| MTA-STS Hosting | Yes | Yes |
| TLS-RPT Support | Yes | Yes |
| Forensic (RUF) Reports | Yes | Yes |
| ARC Chain Support | Yes | Partial |

**Why switch:** One published price for every tier · No one-year renewal floor · Data export without restrictions · When OnDMARC is the honest pick

---

### [DMARCguard vs Sendmarc](https://dmarcguard.io/compare/sendmarc/)

Searching for Sendmarc pricing turns up no published number: every paid tier is quote-only, the domain is the pricing unit, and no rate card exists anywhere. Sendmarc pairs hands-on onboarding with a mature MSP channel, and G2 reviewers reward that with a 4.9 average. DMARCguard puts the number first.

| Feature | DMARCguard | Sendmarc |
|---------|------------|----------|
| DMARC Monitoring | Yes | Yes |
| Hosted DMARC Record | Yes | Yes |
| SPF Flattening / Hosting | Yes | Yes |
| Hosted DKIM | Yes | Yes |
| BIMI Support | Yes | Yes |
| MTA-STS Hosting | Yes | Yes |
| TLS-RPT Support | Yes | Yes |
| Forensic (RUF) Reports | Yes | Yes |

**Why switch:** A number before the sales call · Buy direct, not through a channel · Your data, exportable · When Sendmarc is the better fit

---

### [DMARCguard vs Suped](https://dmarcguard.io/compare/suped/)

Suped is the newest entrant in the DMARC space — launched mid-2025, transparently priced, and well-liked by its early reviewers. Its surface is DMARC, SPF, and DKIM monitoring plus hosted DMARC, SPF, and MTA-STS; BIMI, TLS-RPT, ARC, DANE, and ARF are absent. DMARCguard monitors all nine protocols.

| Feature | DMARCguard | Suped |
|---------|------------|-------|
| DMARC Monitoring | Yes | Yes |
| SPF Validation | Yes | Yes |
| DKIM Validation | Yes | Yes |
| MTA-STS Hosting | Yes | Yes |
| BIMI Support | Yes | No |
| TLS-RPT Support | Yes | No |
| ARC Chain Support | Yes | No |
| DANE/TLSA Support | Yes | No |

**Why switch:** Nine protocols, not four surfaces · Pay per domain, not per email · Data you can take with you · When Suped is the right call

---

### [DMARCguard vs Skysnag](https://dmarcguard.io/compare/skysnag/)

Skysnag pricing starts at $39/mo for Comply, and its autonomous enforcement is real - its reviewers confirm hands-off operation - but that automation starts at the $249/mo Protect tier. DMARCguard publishes per-domain pricing, with guided enforcement included in Pro.

| Feature | DMARCguard | Skysnag |
|---------|------------|---------|
| DMARC Monitoring | Yes | Yes |
| Automated Policy Enforcement | Guided (assessment + simulation) | Protect tier and above |
| SPF Flattening / Hosting | Yes | Yes |
| DKIM Management | Yes | Yes |
| BIMI Support | Yes | Yes |
| MTA-STS Hosting | Yes | Yes |
| TLS-RPT Support | Yes | Yes |
| ARC Chain Support | Yes | No |

**Why switch:** An enforcement path without the $249 gate · One price per domain, no bands · A surface you can verify before buying · When Skysnag is the right call

---

### [DMARCguard vs URIports](https://dmarcguard.io/compare/uriports/)

URIports is the price-transparency leader in this category: five published terrain-named tiers from $1.25/mo plus a quote-only Enterprise plan, quotas counted in reports received, and processing that simply halts at quota instead of surprise-billing you. The trade-offs are a 90-day history ceiling, monitoring without hosted SPF or DMARC, and no SLA or certifications. DMARCguard picks up where monitoring stops.

| Feature | DMARCguard | URIports |
|---------|------------|----------|
| DMARC Monitoring | Yes | Yes |
| Hosted DMARC Record | Yes | No |
| SPF Flattening / Hosting | Yes | No |
| DKIM Validation | Yes | Yes |
| BIMI Support | Yes | Yes |
| MTA-STS Hosting | Yes | Yes |
| TLS-RPT Support | Yes | Yes |
| Forensic (RUF) Reports | Yes | Yes |

**Why switch:** A year of history vs a 90-day ceiling · Hosted SPF and DMARC · Answers for procurement · When URIports is the better fit

---

### [DMARCguard vs DMARCLY](https://dmarcguard.io/compare/dmarcly/)

DMARCLY publishes flat, genuinely low prices — $17.99/mo entry and a 200-domain Enterprise tier at a flat $199/mo. The trade-offs sit elsewhere: 2 months of history on the entry tier, no free plan, email-only alerting, and an API locked to the top tier. DMARCguard pairs a published per-domain price with 1 year of history on Pro.

| Feature | DMARCguard | DMARCLY |
|---------|------------|---------|
| DMARC Monitoring | Yes | Yes |
| SPF Monitoring | Yes | Yes |
| DKIM Monitoring | Yes | Yes |
| SPF Flattening (Hosted SPF) | Yes | From Growth ($39.99/mo) |
| BIMI Support | Yes | Record only |
| MTA-STS Support | Yes | Record only |
| TLS-RPT Support | Yes | Yes |
| ARC Chain Support | Yes | Partial |

**Why switch:** History that outlasts the rollout · Automatic sender classification · Alerts and API without the Enterprise gate · When DMARCLY is the better fit

---

### [DMARCguard vs DMARC Report](https://dmarcguard.io/compare/dmarcreport/)

DMARC Report pricing runs from a free Core tier to $3,900/mo Ultimate, and it is the most-reviewed DMARC product on G2 — 4.8/5 across 471 reviews as of July 2026 — with a mature REST API and SOC 2 Type II. The evaluation questions are the 5/10/25 domain caps on paid tiers, and which protocol unlocks at which tier. Here is the full map.

| Feature | DMARCguard | DMARC Report |
|---------|------------|--------------|
| DMARC Monitoring | Yes | Yes |
| Free Tier | Yes | Yes |
| SPF Monitoring | Yes | Yes |
| SPF Flattening (Hosted SPF) | Yes | Separate product |
| DKIM Monitoring | Yes | Yes |
| BIMI Support | Yes | Yes |
| MTA-STS Hosting | Yes | From Shield ($75/mo) |
| TLS-RPT Support | Yes | From Shield ($75/mo) |

**Why switch:** One pricing model, no cap ladder · Exceeding a cap shouldn't cost your history · ARC, DANE, and SPF flattening in-platform · When DMARC Report is the better fit

---

### [DMARCguard vs Mailhardener](https://dmarcguard.io/compare/mailhardener/)

Mailhardener earns real respect: EUR-native flat pricing, DANE and hosted MTA-STS depth most vendors skip, and SSO with 2FA on every tier — Free included. What it leaves out, by design, is the layer after detection: guided remediation, blocklist monitoring, webhook alerting, and an entry-tier API. That layer is the comparison.

| Feature | DMARCguard | Mailhardener |
|---------|------------|--------------|
| DMARC Monitoring | Yes | Yes |
| SPF Monitoring | Yes | Yes |
| DKIM Monitoring | Yes | Yes |
| TLS-RPT Support | Yes | Yes |
| DANE/TLSA Support | Yes | Yes |
| MTA-STS Hosting | Yes | From Standard (EUR 19/mo) |
| BIMI Support | Yes | From Standard (EUR 19/mo) |
| ARC Chain Support | Yes | No |

**Why switch:** A platform that says what to do next · Blocklists watched alongside authentication · Slack, webhooks, and an API from day one · When Mailhardener is the better fit

---

### [DMARCguard vs Fraudmarc](https://dmarcguard.io/compare/fraudmarc/)

Fraudmarc pairs hosted DMARC report analysis with deep, dedicated SPF flattening - two productized lines, one SLA-backed - plus an Apache-2.0 Community Edition you can run in your own AWS. The trade-off is scope: DMARC and SPF are the whole product, where DMARCguard productizes nine protocols under one published per-domain price.

| Feature | DMARCguard | Fraudmarc |
|---------|------------|-----------|
| DMARC Monitoring | Yes | Yes |
| SPF Flattening / Hosting | Yes | Yes |
| DKIM Validation | Yes | Partial |
| Forensic (RUF/ARF) Reports | Yes | Yes |
| BIMI Support | Yes | No |
| MTA-STS Hosting | Yes | No |
| TLS-RPT Support | Yes | No |
| ARC Chain Support | Yes | No |

**Why switch:** The full stack, not two protocols · A per-domain rate built for portfolios · Hosted platform vs DIY ops · Where Fraudmarc genuinely wins

---

### [DMARCguard vs DMARC Advisor](https://dmarcguard.io/compare/dmarcadvisor/)

DMARC Advisor is a genuinely EU-operated platform: a Dutch entity since 2013, EU data hosting, and hands-on support in four languages. Two structural facts shape any 2026 evaluation: the legacy DMARC Advisor Platform retires on June 30, 2026 in favor of the company's new DMARC Manager platform, and a court-ordered geofence limits service to Europe and Africa. Here is the factual comparison.

| Feature | DMARCguard | DMARC Advisor |
|---------|------------|---------------|
| DMARC Monitoring | Yes | Yes |
| SPF Validation | Yes | Yes |
| SPF Flattening (Hosted SPF) | Yes | Yes |
| DKIM Validation | Yes | Yes |
| TLS-RPT Support | Yes | Yes |
| BIMI Support | Yes | Paid add-on |
| MTA-STS Hosting | Yes | Partial |
| ARC Chain Support | Yes | Not documented |

**Why switch:** Scale past 2 domains at a per-domain rate · Nine protocols, including hosted MTA-STS · Serve your whole footprint · When DMARC Advisor is the right choice

### Head-to-Head Comparisons

Third-party matchups compared on published pricing and features:

- [PowerDMARC vs Valimail: 2026 Pricing Compared](https://dmarcguard.io/compare/powerdmarc-vs-valimail/) — PowerDMARC publishes $8–$250/mo volume pricing; Valimail Enforce starts at $5,000/year, annual-only. Features, free tiers, and pricing compared. Updated July 2026.
- [EasyDMARC vs PowerDMARC: Which Fits in 2026?](https://dmarcguard.io/compare/easydmarc-vs-powerdmarc/) — EasyDMARC Plus starts at $44.99/mo with 2 domains; PowerDMARC Basic scales $8–$250/mo with 5. Features, free tiers, and pricing compared. Updated July 2026.
- [dmarcian vs EasyDMARC: 2026 Comparison](https://dmarcguard.io/compare/dmarcian-vs-easydmarc/) — dmarcian Basic is $24/mo, metering legitimate mail only; EasyDMARC Plus is $44.99/mo with managed hosting. Features and pricing compared. Updated July 2026.
- [dmarcian vs Valimail: Pricing Gap Explained](https://dmarcguard.io/compare/dmarcian-vs-valimail/) — dmarcian publishes $24–$600/mo tiers; Valimail's one public price is $5,000/yr Enforce Starter. Automation, features, and free tiers compared. Updated July 2026.
- [PowerDMARC vs dmarcian: 2026 Comparison](https://dmarcguard.io/compare/powerdmarc-vs-dmarcian/) — PowerDMARC hosts your records with plans from $8–$250/mo; dmarcian is reporting-first from $24/mo, metering legitimate mail only. Compared with sources. Updated July 2026.
- [Valimail vs EasyDMARC: 2026 Comparison](https://dmarcguard.io/compare/valimail-vs-easydmarc/) — Valimail's one public price is $5,000/yr, annual-only; EasyDMARC publishes $44.99–$89.99/mo plans. Automation, free tiers, and features compared. Updated July 2026.
- [DMARC Report vs Valimail: The Affordable Alternative?](https://dmarcguard.io/compare/dmarcreport-vs-valimail/) — DMARC Report publishes plans from $25/mo; Valimail's one public price is $5,000/yr Enforce Starter, annual-only. Pricing, free tiers, and features compared. Updated July 2026.
- [DMARCLY vs dmarcian: 2026 Pricing Compared](https://dmarcguard.io/compare/dmarcly-vs-dmarcian/) — DMARCLY publishes flat tiers from $17.99/mo; dmarcian meters legitimate mail from $24/mo with a 10x Basic-to-Plus jump. Pricing and features compared.
- [MXToolbox vs dmarcian: DMARC Compared (2026)](https://dmarcguard.io/compare/mxtoolbox-vs-dmarcian/) — MXToolbox Delivery Center runs $129–$399/mo with a 90-day DMARC history cap; dmarcian publishes $24–$600/mo tiers. Features and pricing compared side by side.

## Research

Original email authentication research conducted by the DMARCguard team.

### State of Email Authentication 2026

Comprehensive analysis of DMARC, SPF, DKIM, BIMI, MTA-STS, TLS-RPT, DANE, and ARC adoption across 5,499,028 domains from the complete Tranco Top Sites ranking.

**Key findings:**

- **30.4% DMARC adoption** — nearly 7 in 10 top domains have no DMARC protection
- **12.8% enforcement rate** — only 1 in 8 DMARC-enabled domains enforce quarantine or reject
- **56% SPF adoption** — 44% of top domains still don't publish SPF
- **22.7% DKIM adoption** — DKIM trails SPF despite being required by Gmail and Yahoo bulk-sender rules
- **0.3% MTA-STS adoption** — transport-layer security stays rare despite defending against email-in-transit downgrade attacks
- **0.4% BIMI adoption** — brand-logo authentication is still niche
- **only 30 domains deploy DANE** — DANE/TLSA adoption is effectively zero for email (30 of 5,499,028)

Protocols covered: DMARC, SPF, DKIM, BIMI, MTA-STS, TLS-RPT, ARC, DANE, ARF

- [Full study](https://dmarcguard.io/research/email-authentication/)

## Blog

### DMARC Failed: 7 Common Causes and How to Fix Them (2026)

Published: 2026-02-25 | Tags: dmarc, troubleshooting, email-authentication, spf, dkim

In May 2025, Microsoft began rejecting emails that fail DMARC checks with error code 550 5.7.515. Google and Yahoo reached full enforcement in November 2025. The era of optional email authentication is over.

This guide covers the 7 most common DMARC failure causes:

1. **SPF alignment failure** — Return-Path domain doesn't match From domain
2. **DKIM alignment failure** — DKIM d= domain doesn't match From domain
3. **Missing or misconfigured SPF record** — syntax errors, exceeding 10 DNS lookups
4. **DKIM signature issues** — wrong selector, expired key, body modification
5. **Email forwarding** — breaks SPF and potentially DKIM signatures
6. **Third-party sending services** — Mailchimp, SendGrid, Amazon SES not configured for alignment
7. **Subdomain policy inheritance** — sp= tag behavior when subdomains lack their own record

Includes step-by-step fixes for Google Workspace, Microsoft 365, and popular ESPs. Platform-specific DKIM selector tables for 22+ email services.

- [Full article](https://dmarcguard.io/blog/dmarc-failed-how-to-fix/)
- [Markdown version](https://dmarcguard.io/blog/dmarc-failed-how-to-fix.md)

## Getting Started

1. **Sign up free** at [https://app.dmarcguard.io/register](https://app.dmarcguard.io/register) — no credit card required
2. **Add your domain** — enter your domain name in the dashboard
3. **Verify DNS ownership** — add a TXT record to prove domain control
4. **Configure DMARC reporting** — add DMARCguard's address to your DMARC rua= tag
5. **Wait for reports** — aggregate reports arrive within 24-48 hours from major receivers (Gmail, Outlook, Yahoo)
6. **Review dashboard** — compliance health score, source breakdown, and fix recommendations appear automatically

## Links

- Website: [https://dmarcguard.io](https://dmarcguard.io)
- App: [https://app.dmarcguard.io](https://app.dmarcguard.io)
- DMARC report parser (separate library): [https://github.com/dmarcguardhq/dmarcguard](https://github.com/dmarcguardhq/dmarcguard)
- RSS: [https://dmarcguard.io/rss.xml](https://dmarcguard.io/rss.xml)
- Contact: [contact@dmarcguard.io](mailto:contact@dmarcguard.io)