Mailhardener review (2026): is the free plan enough?
DMARC, SPF, DKIM, MTA-STS and BIMI monitoring and hosting
Black Friday: is there a Mailhardener sale?
Mailhardener report card
Fair · out of 4.0 · graded Nov 13, 2026
Best for DMARC reports and MTA-STS for a small number of domains
Mailhardener reads DMARC and TLS reports and hosts MTA-STS and BIMI files. The free plan is for personal or evaluation use only, and the paid plans are in euros.
Who Mailhardener is for
- Fits if you run up to 10 domains and want reports and hosted MTA-STS
- Works for a personal domain you only want to look at
Who Mailhardener is not for
- Skip it if your domain is a company's, as the free plan is for personal or evaluation use
- Tight if you want more than 3 months of history, as 12 months needs Large at EUR 99 a month
- Watch out: prices are in euros and no dollar price was readable
- Watch out: the page does not make clear which tiers have API access and SSO
Why Mailhardener gets a 2.0
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- CValue for moneyStandard is EUR 19 a month for up to 10 domains (EUR 199 a year), close to the category's middle of $23.
- CFree plan and trialA free plan with 1 domain, 1 user and 1 month of data, but only for personal or evaluation use, not commercial domains.
- CFeaturesDMARC and TLS reporting, hosted MTA-STS and BIMI, DNS change monitoring. The listing could not confirm which tiers carry the API and SSO.
- CEase of useNo rating on record. You change DNS records and read reports as they arrive.
- CPlatforms and integrationsWeb only, with no integrations listed on the vendor pages.
What these grades rest on. Graded from this listing, whose facts were read from Mailhardener's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
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<a href="https://toolgpa.com/tools/mailhardener#review"><img src="https://toolgpa.com/badge/mailhardener.svg" alt="Mailhardener: 2.0 GPA on ToolGPA" width="196" height="56"></a>Where Mailhardener stands among email verification and deliverability tools
Mailhardener's GPA of 2.0 is higher than 8 of the 61 other email verification and deliverability tools we grade, and level with 14.
Its paid plans start at about $18.53 a month, against a middle price of $21.50 for the category: 15 of the 43 others that charge start lower.
On features, ease of use and platforms it scores 2.0 out of 4. 10 tools score higher and cost less.
Each grade against the category
Every bar is all 62 email verification and deliverability tools we grade, cut by the letter each got. Mailhardener’s own letter is outlined.
- CValue for moneyAbove 9 of 61, level with 35
- CFree plan and trialAbove 9 of 61, level with 43
- CFeaturesAbove 0 of 61, level with 45
- CEase of useAbove 2 of 61, level with 50
- CPlatforms and integrationsAbove 0 of 61, level with 27
Price against what you get
Each dot is one of 45 email verification and deliverability tools. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep Mailhardener, or make your own?
Keep it
The plain part of Mailhardener you could make: reports. What surrounds it you could not. The 1 things listed below take a company, not a weekend.
That makes this kind of software worth paying for, not this one in particular: 39 of the 61 other email verification and deliverability tools grade higher. It costs $222.32 a year.
What you could make
- Reports: an app builder makes this well.
What you could not
- Reading the reports inbox providers send about your domain.
What this rests on. Mailhardener’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is Mailhardener?
Mailhardener monitors a domain's email security settings and aggregates DMARC and SMTP TLS reports. It hosts MTA-STS policies and BIMI assets, watches DNS for changes and explains reports in plain English. It is free for one domain for personal or evaluation use, with paid tiers for commercial domains.
Worth knowing
- Prices are shown in euros; the page has a currency selector, but a dollar price was not readable from the server.
- The free plan is for personal or evaluation use only, not commercial domains.
- The comparison table lists API access, SSO and periodic reports, but which tiers include them could not be read from the page text.
Key features
- DMARC reporting
- Aggregate (rua) and failure (ruf) reports show every sender using the domain, with a plain-English breakdown. The vendor says its algorithm separates forwarding services from malicious senders.
- SMTP TLS reporting
- TLS failures reported by sending servers are aggregated and analyzed, with warnings by email.
- Hosted MTA-STS and BIMI assets
- Mailhardener serves the MTA-STS policy and BIMI assets so a domain can adopt them without running a web server.
- DNS change monitoring
- Email-related DNS records are monitored, and a notification explains what a change does to protection.
- Domain inspector
- Shows how SPF, DKIM, DMARC and related records are configured and flags common mistakes.
- Multi-user access and auditors
- Paid tiers support role- and domain-based access control, several organizations per login and read-only auditor access.
Mailhardener pricing
As of Nov 13, 2026, Mailhardener has a free plan, and paid plans start at €19 per month for up to 10 domains, or €199 per year.
- Starts at
- €19 per month for up to 10 domains, or €199 per year
- Free plan
- Free plan for personal or evaluation use: 1 domain, 1 user account and 1 month of data retention.
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Free | €0 | 1 domain, 1 user, fair-use report volume and 1 month of retention, for personal or evaluation use. |
| Standard | €19per month for up to 10 domains, billed monthly (€199 per year) | 3 months of retention, unlimited users, hosted MTA-STS, BIMI hosting, DNS monitoring and technical support. |
| Large | €99per month for up to 100 domains, billed monthly (€999 per year) | 12 months of retention, limited onboarding assistance and payment by invoice, plus the Standard features. |
| Enterprise | Custom | No domain limit, custom contract length, assisted onboarding, a private instance option and compliance agreements such as a HIPAA BAA. |
Read from mailhardener.com on Nov 13, 2026. Prices change, so confirm with Mailhardener before you buy.
Ways to pay less
- Annual discountSave with annual billing
Standard is €199 a year (saves €29) and Large is €999 a year (saves €189), against the monthly prices.
Stated on mailhardener.com
Mailhardener alternatives
- Mailhardener vs dmarcian
Free plan · from $19.99/mo
- Mailhardener vs EasyDMARC
Free trial · from $35.99/mo
- Mailhardener vs Suped
Free plan · from $19/mo
- Mailhardener vs Dmarcly
Free trial · from $17.99/mo
Common questions
Does Mailhardener have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. Mailhardener is listed for Web.
Does Mailhardener have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. Mailhardener is listed for Web.
Is Mailhardener open source?
Mailhardener is not described as open source on its own site, as read on Nov 13, 2026.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 13, 2026.