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Email Diagnostics

Tools to verify and validate your email authentication setup.

SPF
DKIM
DMARC
DMARCbis
BIMI
MTA-STS
TLS-RPT
DANE / TLSA

Deliverability

Email deliverability auditMail header analyzerEmail testerIP Blacklist CheckerDomain Blacklist CheckerSPF FlattenerDKIM Selector FinderSMTP/MX Tester

Secure & Monitor

Record generators, policy hosting and continuous monitoring.

Network & Web

Network tools, web page analysis and certificates.

IP Tools

My IP address

Detect your IPv4/IPv6 addresses and their geolocation.

Reverse lookup

Resolve a PTR record and validate DNS consistency.

IP WhoIs

Identify the owner of an IP range and its contacts.

IPv4 netmask

Calculate network, broadcast and usable hosts for any IPv4 block.

IPv6 subnet calculator

Calculate IPv6 subnets, address ranges and reverse DNS entries.

Certificates & BIMI

BIMI logo lookup

Inspect a BIMI logo URL - format, metadata and live rendering - before rollout.

BIMI SVG converter

Convert any SVG to BIMI-compliant Tiny-PS format in seconds.

CSR parser

Inspect a CSR, extract subject details, fingerprints and requested SANs.

VMC inspector

Inspect a Verified Mark Certificate - issuer, validity and SAN coverage - before you publish BIMI.

Web

Page size checker

Check if your page exceeds Google's 2 MB crawl limit.

Phishing URL Checker

Check if a URL is flagged as phishing or malware by 4 threat intelligence sources.

Redirect Checker

Analyze HTTP redirect chains

Domain Redirect

Redirect your domains with automatic HTTPS and 301/302 redirects.

Developer Tools

Text utilities and tools for everyday dev work.

Text

Transform and measure your content in seconds.

Text case converter

Convert any block of text to upper or lower case instantly.

Slug generator

Transform any sentence into an SEO-friendly slug in seconds.

Word & character counter

Measure the length of any text, with instant word and character counts.

Password generator

Generate strong random passwords and memorable passphrases instantly.

Developer

Encoding, hashing, regex and formatting for everyday dev work.

Base64 encoder / decoder

Encode or decode any content in Base64 without leaving the browser.

Hash Generator

Compute MD5, SHA-1, SHA-256 and SHA-512 hashes of any text.

URL encoder / decoder

Encode or decode text using percent-encoding (RFC 3986) right in your browser.

Regex Tester

Test a regular expression against text and visualize matches.

JSON / YAML Formatter

Format, validate and convert JSON and YAML in one click.

🇨🇭 SMI Email Security

Weekly audit of email security across 22 companies in the SMI.

SIX Swiss Exchange · 22 companies analysed · Scan week: 2026-03-23

  • Companies listed in the SMI score an average of 53/100 for email security this week.
  • 0% of SMI companies achieve a grade of A+ or A in email authentication, while 23% receive a D or F.
  • The average score of 53 is 11 points above the global average of 42, indicating stronger-than-average email security practices.
  • 100% of SMI companies have deployed DMARC email authentication, and 86.4% enforce a strict reject policy to block spoofed emails.
  • SPF record deployment stands at 95%, authorizing legitimate sending servers and helping prevent email spoofing.
  • 9% of companies have configured BIMI to display their verified brand logo in supported email clients.
  • 5% enforce TLS encryption for inbound email delivery via MTA-STS, protecting against downgrade attacks.
  • DNSSEC is enabled on 18.2% of SMI domains, adding cryptographic validation to DNS queries.
  • Kuehne+Nagel leads the SMI with a top score of 71/100 (B).
  • Lindt & Sprüngli has the lowest score at 38/100, indicating significant gaps in email security configuration.
  • Scores range from 38 to 71 with a median of 53, reflecting varied levels of email security maturity across the index.

Average score

53/ 100

DMARC reject

86.4%

BIMI configured

9%

MTA-STS enforce

5%

DNSSEC enabled

18.2%

0
A+
0
A
1
B
16
C
5
D
0
F

53

Average

53

Median

38

Min

71

Max

Company

Grade
1Kuehne+Nagelkuehne-nagel.com71B
2Partners Grouppartnersgroup.com68-15C
3Rocheroche.com60C
4Richemontrichemont.com58C
5Novartisnovartis.com58C
6Julius Bärjuliusbaer.com58C
7Lonzalonza.com55C
8Zurich Insurancezurich.com55C
9Geberitgeberit.com54C
10Holcimholcim.com54C
11Givaudangivaudan.com53C
12Sikasika.com53C
13Alconalcon.com52C
14Sandozsandoz.com52C
15TE Connectivityte.com52C
16UBSubs.com51C
17Sonovasonova.com51C
18Swisscomswisscom.com48D
19Nestlénestle.com48D
20Logitechlogitech.com44D
21ABBabb.com43D
22Lindt & Sprünglilindt.com38D

Understanding index-level analysis

A stock index groups the largest companies in a market. Analyzing their email security provides a representative snapshot of how a country's or region's corporate sector protects against email-based threats.

What this page shows:

  • Average score - The mean email security score across all constituent companies
  • Grade distribution - How many companies fall into each grade bracket (A+ through F)
  • Company table - Individual scores, grades and key indicator status for each company
  • Sector breakdown - How different industries within the index compare

Key standards tracked

Each company is evaluated on:

  1. SPF - Is the sending policy properly configured? Does it use -all (hard fail)?
  2. DKIM - Are signing keys published and strong enough (2048-bit minimum)?
  3. DMARC - Is a policy in place? Is it set to quarantine or reject?
  4. BIMI - Is the brand logo published for inbox display?
  5. MTA-STS - Is inbound email transport encryption enforced?
  6. DNSSEC - Is the DNS zone signed to prevent spoofing?

FAQ - Frequently asked questions

Q: How are companies scored?

A: Each domain is analyzed for email authentication standards and awarded up to 100 points across three pillars.

Q: What does the grade distribution show?

A: The spread of scores from A+ to F, indicating overall index maturity.

Q: Can I compare indices?

A: Yes, via the Statistics page.

PagePurpose
Observatory DashboardOverall overview with key metrics
StatisticsCross-index and cross-sector comparison
Email Domain CheckAudit your own domain
SMI - Email Security Scores