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Security report for mailup.com

TeamSystem S.p.A. · Technology · Italy

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

Security score

78/100

Risk levelLow

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

MailUp, operated by TeamSystem S.p.A., is a mature and well-established enterprise technology company specializing in email and SMS marketing solutions. The company offers a comprehensive SaaS platform integrating marketing automation, AI-powered content creation, and multi-channel campaign management. With a strong international presence and multiple industry certifications, MailUp positions itself as a trusted provider for businesses seeking scalable marketing communication tools. The website reflects a high level of digital maturity, leveraging modern CMS, analytics, and marketing technologies to deliver a professional user experience. Security posture is solid with HTTPS, domain transfer protections, and recognized certifications, though some improvements like DNSSEC and explicit security policies could enhance resilience. Overall, MailUp demonstrates strong business credibility, privacy compliance, and technical sophistication, making it a reliable partner in the marketing technology space.

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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • 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

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching mailup.com

This scan found 18 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.

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

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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
77
Security headers
25
Email security
85
DNS health
85
Network security
100
GDPR outside view
95
Average
78

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention mailup.com, from OffSeq Breach.

Total records
508
Employees
0
Customers
504
Third parties
4
Weak passwords
7%

10 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for mailup.com.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

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

Business context

Business profile

MailUp operates in the technology sector, targeting businesses requiring email and SMS marketing capabilities. Its business model is SaaS-based, offering subscription plans with unlimited email sends and high-throughput SMS delivery. The company benefits from its parent TeamSystem S.p.A., enhancing market reach and credibility. Key competitive advantages include AI integration for content creation, extensive integrations with CRM and e-commerce platforms, and a comprehensive consulting service. The presence of multiple localized domains and a multilingual website supports international growth. The company maintains a strong partnership ecosystem and emphasizes GDPR compliance, which is critical for its European customer base. Testimonials and certifications further reinforce its market position and trustworthiness.

Security posture

MailUp exhibits a mature security posture with HTTPS enforced, clientTransferProhibited domain status, and multiple anti-spam and security certifications. The infrastructure undergoes regular assessments to ensure compliance with data protection regulations. However, the absence of DNSSEC and explicit security headers suggests room for improvement. No incident response or vulnerability disclosure information is publicly available, which could be a gap in transparency. The use of third-party analytics and marketing scripts is balanced with a comprehensive cookie consent mechanism, supporting privacy compliance. Overall, the security practices align well with industry standards but could be enhanced by publishing more explicit security policies and contact channels.

Recommendations

  1. Enable DNSSEC to strengthen DNS security and prevent spoofing.
  2. Publish a security.txt file and vulnerability disclosure policy to improve transparency and incident response readiness.
  3. Implement and enforce security headers such as Content Security Policy (CSP), HSTS, and X-Frame-Options.
  4. Provide explicit incident response contact information (e.g., security@ or abuse@ email addresses).
  5. Regularly audit and update third-party scripts to mitigate potential vulnerabilities.

Contact details published on the site

Addresses
Legal name
TeamSystem S.p.A.
VAT number
IT01035310414
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
TeamSystem S.p.A.
Description
MailUp is a powerful, scalable, and integrated marketing solution offering email and SMS delivery combined with SMTP relay and plugins for e-commerce, CRM, and CMS systems. It provides technology, consultancy, and know-how to build quality customer relationships.
Key services
Email marketing campaigns, SMS marketing, Marketing automation, Artificial Intelligence content creation, Integrations with CRM, e-commerce, CMS, ERP, Consulting and strategic support
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, jQuery, HubSpot analytics, Google Tag Manager, Matomo analytics, Iubenda cookie consent
Frameworks
Kleecks CMS
Platforms
HubSpot, Google Tag Manager
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • Regular infrastructure and security policy assessments
  • Use of security and anti-spam certifications

Analytics and tracking

Services
HubSpot Analytics, Matomo
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
HubSpot, Facebook Pixel, Google Ads Pixel, Matomo
Marketing tools
HubSpot, Iubenda Cookie Consent
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 with clear navigation and multilingual support.
  2. Strong emphasis on GDPR compliance and privacy.
  3. Multiple certifications and industry memberships enhance trust.
  4. Use of modern marketing and analytics tools integrated.
  5. No signs of blocking or WAF interference.
  6. No direct company emails or phone numbers found in HTML; contact primarily via forms.
  7. Social media presence on Facebook, LinkedIn, Twitter, Instagram.
  8. No explicit security.txt or incident response contacts found.
Technical notes

Notes

The website is built on WordPress with the Kleecks CMS framework, utilizing modern JavaScript libraries like jQuery and integrating HubSpot and Matomo for analytics. Hosting is managed via AWS infrastructure, indicated by the DNS configuration. The site is mobile-optimized with responsive design and accessibility considerations. SEO is well addressed through proper meta tags, Open Graph, and JSON-LD structured data. Performance is moderate, with potential improvements in caching and script optimization. The use of cookie consent tools and GDPR-compliant policies reflects a mature approach to privacy. Technical risks are minimal but could be further reduced by enhancing security headers and DNS protections.
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

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