Skip to main content

Security report for maileon.com

Maileon · Technology · N/a

Medium risk. 4 critical or high findings in Security headers and SSL/TLS.

Security score

68/100

Risk levelMedium

0–100, higher is better. How it is calculated

Maileon is a well-established marketing automation software provider founded in 2009, offering a scalable platform that supports email marketing, SMS, and omni-channel campaigns. The company targets marketers and businesses seeking to optimize their marketing efforts with a comprehensive toolbox and strong integration capabilities. Their market position is supported by 20 years of experience and a customer base of approximately 3,000 clients worldwide. Technically, the website is built on WordPress with modern technologies such as Alpine.js, Swiper.js, and Lottie Player, and integrates tracking and chat tools like Lead Forensics and Tawk.to. The site is mobile-optimized, SEO-friendly, and performs moderately well. Security-wise, the site enforces HTTPS, uses cookie consent mechanisms, and employs reputable third-party scripts, but could improve by enabling DNSSEC and adding explicit security headers and policies. Overall, the domain registration and hosting are consistent with the business claims, supporting legitimacy. The website is safe for general audiences and demonstrates good privacy compliance with GDPR. Strategic recommendations include enhancing security headers, publishing incident response and vulnerability disclosure policies, and adding clearer contact information such as phone numbers and physical addresses to improve business credibility and trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
95/ 100 · Low
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

4 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  2. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      SSL Certificate Expires Soon

      SSL certificate expires in 26 days

      What to do: Renew SSL certificate before expiration

      • NIS2 21(2)(h)
      • IR 2024/2690 9.2(c): Implementing Regulation (EU) 2024/2690, Annex point 9.2(c): Cryptography
      • NIST SC-17: NIST SP 800-53 Rev. 5 SC-17: Public Key Infrastructure Certificates
    • High

      Weak SSL Key Length

      SSL certificate uses 384-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

Need hands-on remediation? Email guard@offseq.com

Keep watching maileon.com

This scan found 17 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

Billed monthly to your card. Cancel anytime. The full timeline opens with your unlock code.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
65
Security headers
50
Email security
85
DNS health
70
Network security
40
GDPR outside view
95
Average
68

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Maileon operates in the technology sector as a SaaS provider specializing in marketing automation. Their competitive advantage lies in a mature platform with omni-channel capabilities and strong integration options. The business model focuses on subscription-based software services targeting B2B customers across various industries. The company maintains a partnership ecosystem and showcases customer success stories to build trust. Growth indicators include a broad international presence and continuous platform development. The website content and structure reflect a professional and customer-centric approach, supporting their market positioning.

Security posture

The website demonstrates a solid security posture with HTTPS enforced and a cookie consent mechanism aligned with GDPR requirements. No critical vulnerabilities or exposed sensitive data were detected. However, the absence of DNSSEC and some common security headers suggests room for improvement. The use of third-party tracking and chat services introduces some privacy considerations, but these are managed with user consent. The lack of published security policies or incident response contacts limits transparency. Overall, the security maturity is good but could be enhanced by adopting additional best practices and formalizing security documentation.

Recommendations

  1. Enable DNSSEC on the domain to strengthen DNS security.
  2. Implement and verify security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Publish a clear security policy and incident response contact information on the website.
  4. Add a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  5. Include explicit company contact phone numbers and physical addresses to improve business credibility and user trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Maileon
Description
Maileon offers smart and scalable marketing automation software that helps businesses realize their marketing ambitions by providing a full toolbox for marketing and communication experiences transcending channels and expectations.
Key services
Email marketing software, Marketing automation platform, Omni-channel marketing including SMS, SMTP and Email API services, Integrations with CRM, CMS, analytics, and shop systems
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress 6.8.1, Yoast SEO Premium, jQuery 3.7.1, Swiper.js, Alpine.js, Lottie Player, Lead Forensics tracking, Tawk.to chat widget
Frameworks
WordPress
Platforms
Web
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Use of reputable third-party scripts

Analytics and tracking

Services
Google Analytics (implied via gtag scripts), Lead Forensics, Leadinfo
Tracking level
extensive
Privacy practices
good

Advertising

Tracking pixels
Lead Forensics, Leadinfo
Marketing tools
Google Tag Manager (via tagging.maileon.com), Tawk.to live chat
Transparency
good

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is professionally designed and well-structured.
  2. Comprehensive cookie consent and privacy policy in place.
  3. No terms of service page found.
  4. Multiple language versions available.
  5. Use of modern web technologies and tracking tools.
  6. No exposed sensitive data or obvious security issues.
  7. No direct phone numbers or physical addresses found in the main content.
  8. Contact primarily via web forms and email links.
  9. No explicit security or incident response policies published.
  10. No vulnerability disclosure or security.txt found.
Technical notes

Notes

The website is built on a modern WordPress platform with up-to-date plugins and libraries, including Yoast SEO Premium for search optimization. It uses JavaScript frameworks like Alpine.js and Swiper.js for interactive UI components and Lottie Player for animations. The hosting is provided by Hetzner Online GmbH, a reputable provider. Performance is moderate with good mobile responsiveness and accessibility features. The site integrates multiple third-party tracking and marketing tools, which are managed via a consent banner. Technical risks are minimal but include reliance on external scripts and the lack of DNSSEC. Opportunities exist to improve security headers and streamline third-party dependencies for enhanced performance and security.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

Reviews of this site

Share your experience with maileon.com. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review maileon.com.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.