DMARC Monitoring Tools Compared
An honest side-by-side of the leading platforms. We've called out where competitors are stronger and where MailShield is, so you can choose the right tool, not the loudest one.
MailShield
Free / from €4/domain/mo
1 domain, no card required
Modern, ops-native: real-time alerts in Slack/Teams/Discord, deliverability tester with phishing analysis, automatic DKIM discovery
Mailhardener
Free / from €16.58/mo
1 domain, 1 month retention
Strong technical depth, EU-based, SSO standard on paid. But email-only alerts and manual DKIM setup
EasyDMARC
Free / from €36/mo
1 domain, 1k emails/mo
Polished UX with Slack and Teams integrations, MSP/reseller program, US-tier pricing
PowerDMARC
From ~$8/mo
Trial only
Enterprise/MSSP-focused, broad protocol coverage, white-label available on higher tiers
dmarcian
From ~$20/mo
Personal use only
DMARC pioneer, strong educational content, MSP program, premium pricing
Feature-by-Feature Comparison
Where each tool actually wins and loses, based on their public documentation and pricing pages.
| Feature | MailShield | Mailhardener | EasyDMARC | PowerDMARC | dmarcian |
|---|---|---|---|---|---|
| Free tier for business use | 1 domain, 250 emails | 1 domain | 1 domain, 1k emails | ||
| Protocols monitored | 8 | 8 | 6 | 6 | 3 |
| Real-time multi-channel alerts (Slack, Teams, Discord, Telegram, etc.) | Slack + Teams only | Limited | |||
| Deliverability tester with phishing analysis | |||||
| Automatic DKIM selector discovery | |||||
| DMARC aggregate (RUA) reports | |||||
| TLS-RPT processing | Higher tiers | ||||
| Hosted MTA-STS | Paid plans | Higher tiers | Higher tiers | ||
| DANE / TLSA monitoring | |||||
| Context-aware security score | Domain inspector | ||||
| Public REST API | Starter and above | Not promoted | Premium and above | Enterprise | Enterprise |
| SSO bundled on paid plans | Higher tiers | Higher tiers | Higher tiers | ||
| Starting paid price | €8/mo (2 domains, annual) | €16.58/mo (10 domains) | €36/mo (2 domains) | ~$8/mo | ~$20/mo |
Pricing and features change. We aim to keep this table accurate; if something looks off, let us know and we'll update it.
Where MailShield Wins
Three things every other tool on this page is missing.
- Real-time alerts in your team's chat. Slack, Microsoft Teams, Discord, Telegram, Matrix, Mattermost, Pushover: seven channels out of the box. No inbox-rule gymnastics, no webhooks to wire up.
- Deliverability tester with phishing analysis. Forward a real message and get a complete report: SPF/DKIM/DMARC alignment, FCrDNS, blocklist status, and content-level phishing checks. None of the alternatives ship this.
- Automatic DKIM selector discovery. Most tools ask you to find and enter your DKIM selectors manually, the #1 onboarding friction in this category. MailShield extracts them from received messages and registers them automatically.
Where Competitors May Be a Better Fit
We won't pretend we're the right tool for every team. A few honest tradeoffs:
- Need enforced 2FA or an auditor role? MailShield supports SSO via Google, Microsoft, or any OIDC provider, plus passkeys. Mailhardener additionally bundles 2FA and a read-only auditor role on every paid plan; if those are hard requirements, take a close look at them.
- Running an MSP with mature white-label needs? EasyDMARC, PowerDMARC, and dmarcian have well-established reseller programs. Our MSP product is purpose-built for it but is newer. Evaluate the feature parity for your specific workflow.
- Managing 50+ domains today? Our per-domain pricing is built for this: 50 domains lands you on the Growth tier at €4/domain/mo annual = €200/mo. At 100+ domains you drop to €3/domain on Scale. Run the math against your current tool. Most flat-tier plans get expensive past 25 domains.
Detailed Comparisons
Read the in-depth breakdown against each alternative.
See how your domain scores
Add a domain in under a minute. The free plan covers 1 domain with all eight protocol checks, real-time alerts, and the deliverability tester.