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Security report for rapidmail.co.uk

rapidmail · Technology · United Kingdom

Medium risk. 7 critical or high findings in Email security, Security headers and 2 other checks.

Security score

63/100

Risk levelMedium

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

rapidmail is a professional email marketing and transaction email software provider targeting businesses and agencies primarily in the UK and Europe. The company offers a SaaS platform with key services including newsletter creation, marketing automation, and transaction email management. The website demonstrates a strong market position with over 80,000 customers and high customer satisfaction. Technically, the site uses modern web technologies and integrates multiple analytics tools, indicating a mature digital infrastructure. Security posture is generally good with HTTPS enforced and no exposed sensitive data, though some improvements in security headers and incident response transparency are recommended. Overall, the domain WHOIS data is unavailable or inconsistent, which slightly reduces trustworthiness for the exact domain analyzed but does not detract from the legitimacy of the business itself. Strategic recommendations include enhancing security headers, publishing incident response contacts, and adding vulnerability disclosure mechanisms.

Scanned

NIS2 and GDPR posture

GDPR outside view
65/ 100 · Medium
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

7 findings rated critical or high. Fix these first.

  1. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  2. 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';…

  3. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

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

Keep watching rapidmail.co.uk

This scan found 26 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

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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

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

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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
72
Security headers
20
Email security
60
DNS health
60
Network security
100
GDPR outside view
65
Average
63

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

rapidmail operates in the technology and e-commerce sectors, providing email marketing solutions with a SaaS business model. The company targets medium-sized businesses and agencies requiring professional newsletter and transactional email services. Their competitive advantages include a comprehensive feature set, marketing automation, and strong customer satisfaction. The company maintains a broad partnership ecosystem with regional domains and integrations with popular e-commerce platforms. Revenue streams likely include subscription fees and service plans. Growth indicators include extensive template offerings and a large customer base. The company emphasizes certifications and trust signals to enhance credibility.

Security posture

The website exhibits a moderate to good security maturity level with HTTPS enabled and use of asynchronous loading for analytics scripts to reduce performance impact. However, the absence of key security headers such as Content Security Policy (CSP), HSTS, and X-Frame-Options is a gap. No incident response or vulnerability disclosure information is publicly available, which limits transparency and readiness perception. Data protection practices appear aligned with GDPR, supported by visible privacy and cookie policies with consent mechanisms. No vulnerabilities or exposed sensitive data were detected in the HTML content. Overall, the security posture is solid but could be improved by adopting additional best practices and transparency measures.

Recommendations

  1. Implement and enforce security headers including CSP, HSTS, and X-Frame-Options to enhance protection against common web attacks.
  2. Publish clear incident response and security contact information to improve transparency and readiness.
  3. Create and maintain a vulnerability disclosure policy or security.txt file to encourage responsible reporting of security issues.
  4. Regularly audit and update third-party scripts and libraries to avoid vulnerabilities.
  5. Enhance WHOIS domain registration consistency or clarify domain ownership to improve trustworthiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
rapidmail
Description
Send newsletters with rapidmail – test our newsletter software free of charge and with no obligation. Request a free trial today.
Key services
Newsletter software, Transaction emails, Marketing automation, Newsletter templates
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, Google Tag Manager, Matomo Analytics, Heap Analytics, Mixpanel
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of security and analytics scripts asynchronously

Analytics and tracking

Services
Matomo, Heap Analytics, Mixpanel, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Matomo, Heap Analytics, Mixpanel, Axeptio
Marketing tools
Matomo, Heap Analytics, Mixpanel
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and professional design
  2. Strong focus on email marketing and transaction email services
  3. Multiple language and regional versions linked
  4. Good privacy and cookie policy presence with consent mechanisms
  5. Use of modern analytics and marketing tools
  6. No visible security headers detected in HTML source
  7. WHOIS data for the domain is missing or invalid, indicating domain registration issues
  8. No explicit security.txt or vulnerability disclosure found
  9. Contact information is clearly presented with phone and email
  10. Certifications such as CSA and ISO 27001 are displayed
Technical notes

Notes

The website is built with modern HTML5 and CSS3 standards and uses multiple analytics and marketing tools such as Matomo, Heap Analytics, Mixpanel, and Google Tag Manager. The site is mobile-optimized with responsive design and good accessibility features. Performance is moderate, with asynchronous script loading to improve speed. No CMS or hosting provider was explicitly detected. The site structure is clear with well-organized navigation and comprehensive metadata for SEO. Technical risks include missing security headers and potential domain registration inconsistencies that could impact business operations or trust.
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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