DMARCguard vs 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.
Comparison last verified July 23, 2026. DMARCguard is our product — check every number against MXToolbox's pricing page .
1-Year History vs 90-Day Cap
MXToolbox's own knowledge base caps DMARC Performance history at 90 days — below typical SOC 2 and PCI audit-evidence windows. DMARCguard Pro retains a full year.
Published Per-Domain Pricing
Delivery Center is $129/mo for up to 5 domains — a price shown on MXToolbox's own upgrade pages and in G2's catalog, but there is no public pricing page. DMARCguard starts at $3.9/domain/mo (founding), published on our pricing page.
Continuous Monitoring, 9 Protocols
The free SuperTool is point-in-time diagnostics. Continuous DMARC monitoring is the paid tier — and even there, MTA-STS and TLS-RPT stay lookup-only while ARC and DANE are absent. DMARCguard monitors all 9 continuously.
Feature Comparison
MXToolbox shines at one-off diagnostics; the gap is continuous multi-protocol monitoring.
| Feature | DMARCguard | MXToolbox |
|---|---|---|
| DMARC Monitoring Delivery Center ($129/mo) on MXToolbox; free record checker only otherwise | ||
| SPF Validation SPF flattening gated to Delivery Center Plus ($399/mo) | ||
| DKIM Validation | ||
| BIMI Support Record monitoring only on MXToolbox; no VMC issuance | ||
| MTA-STS Validation Free record lookup only; no hosting at any tier | ||
| TLS-RPT Support No TLS-RPT hosting or report ingestion at any tier | ||
| ARC Chain Support Header Analyzer surfaces ARC results; no dedicated chain analyzer | ||
| DANE/TLSA Support | ||
| Forensic (RUF/ARF) Reports | ||
| Automatic Sender Identification MXToolbox verifies senders across 1.2M+ DMARC digests monthly | ||
| Free One-Off DNS Lookups Free SuperTool lookups — MXToolbox's signature strength | ||
| Live SMTP Port-25 Diagnostics | ||
| Inbox Placement Testing | ||
| Blacklist Monitoring (100+ lists) Included in all Delivery Center plans | ||
| Compliance Health Score | ||
| CSV/JSON Export |
Pricing Comparison
MXToolbox has no public pricing page — Delivery Center's flat $129/mo surfaces on its upgrade pages and in G2's catalog, and annual and extra-domain rates are not disclosed. DMARCguard prices per domain, in public.
| Tier | DMARCguard | MXToolbox |
|---|---|---|
| Free | 2 domains, 30 days history, 7 protocols | Free lookups + 1 weekly blacklist monitor; no DMARC dashboards |
| Paid entry | $3.9/domain/mo — up to 10 domains, 1 year history (founding price) | $129/mo — 5 domains, 500K msgs/mo, 90-day DMARC history |
| Upper tier | Custom | $399/mo Delivery Center Plus (adds SPF flattening, 5M msgs); Managed service quote-only |
Why choose DMARCguard over MXToolbox?
Audit-ready history
MXToolbox caps DMARC Performance history at 90 days per its own knowledge base — shorter than the evidence windows most SOC 2 and PCI audits expect. DMARCguard Pro keeps a full year, so your auditor sees the whole trend.
Protocol coverage that keeps going
On MXToolbox, MTA-STS and TLS-RPT are free lookups with no monitoring, DANE has no tooling at all, and there is no ARC chain analyzer — a June 2026 MXToolbox blog post argues ARC should be retired. DMARCguard monitors all 9 protocols, ARC and DANE included.
The 5-domain math
Five domains on Delivery Center cost $1,548/yr at the published $129/mo rate. The same five domains on DMARCguard Pro run $414/yr at the standard rate — and less on founding pricing.
Billing you can see and leave
Delivery Center has no public pricing page — the $129/mo rate surfaces on MXToolbox's upgrade pages and in G2's catalog — and billing and cancellation friction is the most-cited theme in its Trustpilot sample (3.7/5 across 18 reviews, April 2026). DMARCguard's pricing and cancellation terms are published, and plans are self-serve.
Who is each best for?
Who's best for MXToolbox?
Sysadmins who want best-in-class free one-off DNS and blacklist diagnostics, and deliverability teams that need inbox-placement testing, live SMTP diagnostics, and mailflow monitoring more than deep multi-protocol DMARC management. The free SuperTool remains the category reference for spot checks.
Who's best for DMARCguard?
Teams running a continuous DMARC program: audit-window retention (1 year on Pro vs a hard 90-day cap), all 9 protocols monitored including ARC and DANE, per-domain pricing published on the site, and remediation guidance that turns every failing source into a next step.
Migrating from MXToolbox
No DNS teardown required — DMARCguard reads standard aggregate (RUA) reports, so you can run both side by side and cancel when parity is proven.
- Export your Delivery Center data first
The DMARC Performance window is 90 days, so there isn't much history to preserve — but export what you have as CSV before cancelling, since account access closes after cancellation.
- Add your domains to DMARCguard
Sign up free and add your domains. Keep Delivery Center active during validation — parallel running costs nothing extra on our side.
- Append DMARCguard's reporting address
Add our
rua=mailto:address alongside MXToolbox's in your DMARC record. Reports start arriving within 24-48 hours. - Validate parity for 14-30 days
Compare sender identification, alignment rates, and volume between both dashboards.
- Remove MXToolbox's hosted DMARC CNAME if you used it
If your DMARC record delegates to MXToolbox via CNAME, replace it with a direct record — DMARCguard provides the exact value.
- Cancel Delivery Center before your renewal date
Review MXToolbox's cancellation terms and time your notice ahead of your renewal date so the subscription ends cleanly.
Estimated time: ~45 minutes
Frequently Asked Questions
Is MXToolbox free?
The SuperTool lookups are free (with ads and daily limits), and a free account includes one monitor with weekly checks against the top 30 blacklists. Continuous DMARC monitoring is not free — that requires Delivery Center at $129/mo. DMARCguard's free tier includes 2 domains with real DMARC report ingestion and 30 days of history.
How much does MXToolbox Delivery Center cost?
Delivery Center is $129/mo (5 domains, 500K messages/mo); Delivery Center Plus is $399/mo (5M messages, SPF flattening); Managed Email Delivery Services is quote-only. MXToolbox has no public pricing page — the $129 and $399 rates appear on its own upgrade/product pages (verified on the Delivery Center Plus page, July 2026) and in G2's catalog. Annual pricing is not disclosed.
What is a good MXToolbox alternative for DMARC monitoring?
If you need continuous DMARC monitoring with longer retention, a dedicated platform fits better than a diagnostics toolbox. DMARCguard monitors 9 protocols with a year of Pro history — see the full MXToolbox alternative guide, or compare EasyDMARC and PowerDMARC as well.
Does MXToolbox support MTA-STS, TLS-RPT, ARC, or DANE?
Not as monitored protocols. MTA-STS and TLS-RPT exist as free record lookups only — no hosting, no report ingestion. There is no DANE/TLSA tool at any tier, and no dedicated ARC chain analyzer. DMARCguard monitors all four, alongside DMARC, SPF, DKIM, BIMI, and ARF.
How long does MXToolbox keep DMARC history?
90 days. MXToolbox's own knowledge base documents the DMARC Performance history filter as ranging from 1 day up to 90 days. DMARCguard retains 30 days on Free and a full year on Pro.
Is MXToolbox still good for one-off DNS checks?
Yes — genuinely. Its free tools and live SMTP port-25 diagnostics (open relay, reverse DNS) do things browser-only tools can't. Keep it bookmarked for spot checks. Continuous DMARC monitoring is simply a different job, and it's the job DMARCguard is built for.
Other Comparisons
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