Skip to main content

Security report for flowmailer.net

Spotler · Technology · Netherlands

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

53/100

Risk levelMedium

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

Spotler is a technology company specializing in data driven marketing software with a strong emphasis on transactional email delivery through its SendPro platform. The company holds a reputable market position in the Netherlands, supported by ISO 27001 certification and trusted by a range of clients from small to large enterprises. The website content is professionally presented, targeting businesses requiring reliable and fast transactional email services integrated with marketing automation capabilities. Technically, the site is built on WordPress with multilingual support and uses modern tools like Google Tag Manager and Cloudflare for performance and security. However, the absence of a valid SSL certificate significantly weakens the security posture, exposing the site to risks and reducing trust in secure communications. Privacy compliance is well addressed with clear privacy and cookie policies, though no explicit consent mechanism was detected. Overall, the site demonstrates good business credibility and technical maturity but requires urgent remediation of SSL/TLS issues to enhance security and user trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
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. 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. GDPR outside view

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

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

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

Keep watching flowmailer.net

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.

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
50
Security headers
25
Email security
50
DNS health
80
Network security
75
GDPR outside view
40
Average
53

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

Spotler operates a SaaS business model offering marketing automation and transactional email delivery services. Its market positioning is strengthened by ISO 27001 certification and a broad product portfolio including AI-powered chatbots and customer data platforms. The company targets B2B customers needing reliable email delivery and marketing solutions. The website reflects a consistent brand with detailed product information, customer testimonials, and multilingual support, indicating a medium-sized enterprise with a focus on growth and customer engagement. The partnership with flowmailer.net and integration of various marketing tools suggest a well-developed ecosystem. Revenue streams likely include subscription fees for software products and professional services such as support and education.

Security posture

The current security posture reveals a moderate maturity level with the use of Cloudflare CDN and some security headers like X-Content-Type-Options. However, the critical absence of a valid SSL certificate and lack of TLS protocol support are major vulnerabilities that undermine secure data transmission and user trust. No advanced security mechanisms such as HSTS, OCSP stapling, or session resumption are implemented. The site does not expose sensitive data or show signs of vulnerable libraries, but the lack of HTTPS is a critical compliance and security gap. Incident response and vulnerability disclosure policies are not evident, indicating potential gaps in security governance. Overall, the site requires immediate SSL/TLS remediation and enhancement of security best practices to meet industry standards and regulatory requirements.

Recommendations

  1. Install and maintain a valid SSL/TLS certificate to enable HTTPS across the site.
  2. Enable modern TLS protocols (TLS 1.2 or 1.3) and disable deprecated protocols.
  3. Implement HTTP Strict Transport Security (HSTS) with includeSubDomains and preload options.
  4. Enable OCSP stapling to improve certificate revocation checking performance and security.
  5. Develop and publish a vulnerability disclosure policy and incident response contact information.
  6. Add explicit cookie consent mechanisms to enhance privacy compliance.
  7. Regularly audit and update third-party libraries and plugins to mitigate vulnerabilities.
  8. Enhance accessibility features to improve compliance and user experience.
  9. Expand contact information to include physical addresses and data protection officer details if applicable.
  10. Improve performance metrics and optimize resource loading for faster page loads.
Technical notes

Notes

The website is built on WordPress CMS with multilingual support via WPML plugin. It uses Google Tag Manager for analytics and tracking, FontAwesome for icons, and AddToAny for social sharing. Hosting and CDN services are provided by Cloudflare, which offers caching and some security features. The site has moderate performance but lacks a valid SSL certificate, which is a significant technical deficiency. The HTML and CSS appear valid and well-structured, with good SEO metadata and structured data (JSON-LD) for organization and webpage information. The site is mobile optimized and uses modern responsive design techniques. However, the absence of HTTPS and modern TLS protocols poses a risk to data integrity and confidentiality. The technical stack is modern but requires urgent security upgrades to align with best practices.
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 flowmailer.net. 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 flowmailer.net.

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.