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Security report for billionmail.com

aaPanel · Technology · N/a

Medium risk. 9 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

63/100

Risk levelMedium

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

BillionMail is an open-source mail server and email marketing solution developed by aaPanel, targeting developers and businesses seeking a self-hosted, cost-effective alternative to SaaS email platforms. The website presents a professional and well-structured interface with clear descriptions of its services, including cold email capabilities, deliverability analytics, and a data visualization dashboard. The technical infrastructure leverages modern frontend technologies such as VitePress and Vue.js, hosted behind Cloudflare, ensuring good performance and mobile optimization. Security posture is generally strong with HTTPS enforced and no visible vulnerabilities, though explicit security headers and privacy policies are absent. The lack of WHOIS data for the domain raises concerns about domain registration legitimacy, impacting overall trust. Analytics usage includes Google Tag Manager and Cloudflare Insights, with moderate user tracking but limited privacy compliance indicators. Overall, the site is safe, professional, and functional but would benefit from enhanced transparency and security documentation.

Scanned

NIS2 and GDPR posture

GDPR outside view
35/ 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

9 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 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 billionmail.com

This scan found 23 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

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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
57
Security headers
15
Email security
85
DNS health
85
Network security
100
GDPR outside view
35
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

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 billionmail.com, from OffSeq Breach.

Total records
9
Employees
0
Customers
9
Third parties
0
Weak passwords
33%

1 subdomain 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 billionmail.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

BillionMail operates in the technology sector, focusing on open-source email infrastructure and marketing tools. Its business model revolves around providing free, self-hosted software to users, likely monetizing through support or related services. The project is positioned as a competitor to SaaS email marketing platforms by offering unlimited sending and detailed analytics. The presence of a GitHub repository and Discord community indicates active development and user engagement. However, the absence of direct contact information and official domain registration details may hinder trust and adoption. The company aaPanel appears as the parent entity, but no subsidiaries or partners are explicitly identified. The market niche is specialized, targeting technically proficient users who prefer control over their email infrastructure.

Security posture

The website demonstrates a moderate to good security maturity level with HTTPS enabled and no exposed sensitive data. However, the absence of common security headers such as Content Security Policy (CSP), HSTS, and X-Frame-Options reduces the defense-in-depth posture. No vulnerability disclosure policy or security.txt file is present, limiting incident response readiness. Privacy compliance is weak due to missing privacy and cookie policies, which may expose the company to regulatory risks such as GDPR non-compliance. The lack of contact channels for security incidents further diminishes the security culture perception. Overall, while no critical vulnerabilities are evident, improvements in security documentation and headers are recommended to enhance trust and compliance.

Recommendations

  1. Implement and publish comprehensive privacy and cookie policies to improve regulatory compliance.
  2. Add standard security headers including CSP, HSTS, and X-Frame-Options to strengthen security posture.
  3. Provide clear contact information including security incident response contacts to enhance trust and readiness.
  4. Establish a vulnerability disclosure program or security.txt file to facilitate responsible reporting.
  5. Verify and update domain registration details to ensure legitimacy and improve business credibility.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
aaPanel
Description
BillionMail gives you open-source MailServer, email marketing — fully self-hosted, dev-friendly, and free from monthly fees.
Key services
Open-source MailServer, Newsletter, Email Marketing Solution, Cold Email Partner, Deliverability Analytics, Data Visualization Dashboard
Content quality
good
Branding
consistent

Technology

Stack
VitePress, Vue.js, GitHub, Google Tag Manager, Cloudflare Insights
Frameworks
VitePress, Vue.js
Performance
fast
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries

Analytics and tracking

Services
Google Tag Manager, Cloudflare Insights
Tracking level
moderate
Privacy practices
poor

Advertising

Tracking pixels
Cloudflare Insights
Transparency
basic

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
moderate

Key observations

  1. Website is fully accessible with rich content about an open-source mail server and marketing tool.
  2. No privacy, cookie, or terms of service policies found on the site.
  3. No direct contact emails or phone numbers are provided on the website.
  4. Site uses modern frontend technologies and is well-structured.
  5. WHOIS data is missing, indicating possible domain registration issues or privacy protection.
  6. Security headers are not explicitly visible in the HTML content.
  7. Google Tag Manager and Cloudflare Insights are used for analytics.
  8. No signs of adult or questionable content.
  9. Social media presence includes GitHub and Discord links.
Technical notes

Notes

The website is built using modern web technologies including VitePress and Vue.js, ensuring a responsive and performant user experience. Hosting behind Cloudflare provides additional security and performance benefits. The site includes Google Tag Manager and Cloudflare Insights for analytics, indicating moderate tracking capabilities. The HTML and CSS are valid and well-structured, with good mobile optimization and accessibility features. However, the absence of a CMS or backend platform is noted, consistent with a static site generator approach. There is no evidence of technical debt or legacy code, but the lack of explicit security headers and privacy documentation represents a technical gap. Overall, the technical implementation is solid with room for security and compliance enhancements.
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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