Kuveris
Kuveris · Email Security Suite

Email security. Measured, not assumed.

Tools for the complete email stack — from SPF to DANE, from diagnostics to archiving. Built in Regensburg, operated in the EU.

Scan your domain for freeView products
example.com · auth checkA · 100/100
SPFv=spf1 include:… -all✓ ok
DKIMdefault (RSA·2048)✓ ok
DMARCv=DMARC1; p=reject; rua=mailto:…✓ ok
MTA-STSversion: STSv1 · mode: enforce✓ ok
DANE_25._tcp IN TLSA 3 1 1 …✓ ok
TLS-RPTv=TLSRPTv1; rua=mailto:…✓ ok
16 providers documented300+ guides4 languages7 standards

The suite

Each product solves one problem of the email stack. Together they form a platform: one vendor, one DPA, one dashboard.

Beta — free

MXAudit

MX security diagnostics with a grade

Checks any domain's mail configuration — TLS, SPF, DKIM, DMARC, MTA-STS, DANE, TLS-RPT, BIMI — and produces a graded, shareable report. Free, instant, no signup.

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In development

MARCo

DMARC monitoring all the way to p=reject

Ingests DMARC aggregate and forensic reports, visualizes every source sending as your domain, and walks you safely from p=none to p=reject. EU-hosted, GDPR-compliant.

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In development

Mailarchiver

GoBD-compliant email archiving

Audit-proof email archiving for German SMBs: immutable storage, full-text search, configurable retention, and the auditor access methods (Z1/Z2/Z3) German tax authorities can demand during an audit.

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In development

Letterlock

Policy-driven email encryption

An SMTP encryption gateway in front of your mail server: PGP and S/MIME through a shared policy engine — encryption by rule, not by user discipline.

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Why Kuveris

Verified against primary sources

Our guides and checks cite RFCs and vendor documentation — every claim is backed by evidence, nothing is guesswork.

Standards, not lock-in

SPF, DKIM, DMARC, MTA-STS, DANE, TLS-RPT, BIMI: open standards living in your DNS. Our tools make them measurable — the records stay yours.

EU-hosted, GDPR-compliant

Built and operated by Hartmann IT Solutions GmbH in Regensburg. No data transfers to third countries, DPA included.

From the blog

Step-by-step guides for SPF, DKIM, DMARC & co — per provider, in four languages, verified against primary sources.

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