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: change alerts in Slack/Teams/Discord on Pro, 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 |
| Multi-channel alerts (Slack, Teams, Discord, Telegram, etc.) | Pro, 10 channel types | 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 | Pro and Enterprise | Not promoted | Premium and above | Enterprise | Enterprise |
| Single sign-on (SSO) | Google or Microsoft, all plans | Paid plans | Higher tiers | Higher tiers | Higher tiers |
| Starting paid price | €4/mo (1 domain, annual) | €16.58/mo (10 domains) | €36/mo (2 domains) | ~$8/mo | ~$20/mo |
Competitor details last checked in April 2026. Pricing and features change; if something looks off, let us know and we'll update it.
Where MailShield Wins
Three areas where MailShield goes further than the other tools on this page.
- Change alerts in your team's chat. Every domain is rechecked every 2 hours. On Pro, alerts go to 10 channel types: Slack, Microsoft Teams, Discord, Telegram, Matrix, Mattermost, Pushover, PagerDuty, Datadog and webhooks. No inbox rules to maintain.
- Deliverability tester with phishing analysis. Send a real message to a test address 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 finds them in your DMARC reports and test emails and adds 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 SSO through your own identity provider, enforced 2FA or an auditor role? MailShield offers sign-in with Google or Microsoft, plus passkeys, on every plan. Mailhardener bundles SSO, 2FA and a read-only auditor role on its paid plans; if those are hard requirements, take a close look at it.
- 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 graduated per-domain pricing is built for this. Each domain is billed at its own band's rate, so 50 domains on annual billing is 25 × €4 + 25 × €3.20 = €180/mo, and every domain above 100 costs €2.40. 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, email alerts, and the deliverability tester.