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Security report for mailnatives.com

Mailnatives s.r.o. · Technology · Czech Republic

Medium risk. 8 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

61/100

Risk levelMedium

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

Mailnatives s.r.o. is a Czech Republic-based company specializing in professional email marketing tools and services. Their product suite includes Mailocator for lead generation, Mailsmitter for transactional email delivery, Mailiana as an email editor, and Mailcolm for email validation. The company targets agencies, freelancers, marketers, and webmasters, positioning itself as a niche provider with a focus on B2B SaaS and consulting services. Founded in 2019, Mailnatives maintains a consistent brand presence and offers clear contact channels and client testimonials, enhancing trust and credibility. Technically, the website uses a custom or unknown CMS with a technology stack including jQuery 1.10.2 and Google Fonts. The site is moderately performant with good mobile optimization and basic accessibility features. However, the use of an outdated JavaScript library and lack of security headers indicate areas for technical improvement. DNSSEC is not enabled, which is a security gap. From a security perspective, the site uses HTTPS but lacks advanced security headers and explicit privacy or cookie consent mechanisms, which impacts GDPR compliance. No incident response or vulnerability disclosure information is provided. The WHOIS data is consistent and supports the legitimacy of the domain and business. Overall, the website is professional and trustworthy but would benefit from enhanced security practices, updated technical components, and improved privacy compliance to strengthen its security posture and regulatory adherence.

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

8 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 mailnatives.com

This scan found 25 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
72
Security headers
15
Email security
72
DNS health
70
Network security
100
GDPR outside view
35
Average
61

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 mailnatives.com, from OffSeq Breach.

No leaked records found

Breach holds no records for mailnatives.com right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

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

Business context

Business profile

Mailnatives operates in the technology sector, focusing on email marketing solutions for professional users. Their business model is primarily B2B SaaS complemented by consulting services tailored for agencies, freelancers, and webmasters. The company leverages a multi-product strategy to address different aspects of email marketing, which provides competitive advantages in specialization and client targeting. Revenue streams likely include software subscriptions and consulting fees. The presence of client testimonials and an EU VAT number indicates established operations within the EU market. Partnerships with localized domains like mailocator.com and mailocator.de suggest a growing ecosystem. The company’s small size and focused product suite position it well for niche market penetration but may limit scale without further expansion.

Security posture

Mailnatives demonstrates a moderate security maturity level. The use of HTTPS is a fundamental strength, ensuring encrypted communications. However, the absence of DNSSEC, security headers (such as Content Security Policy, HSTS, X-Frame-Options), and updated JavaScript libraries introduces potential vulnerabilities. The lack of explicit privacy and cookie consent mechanisms indicates compliance gaps with GDPR and related regulations. No public incident response or vulnerability disclosure policies were found, which could hinder timely handling of security events. Data collection via contact forms appears secure but lacks visible anti-bot or CAPTCHA protections. Overall, while no critical vulnerabilities are evident, improvements in security best practices and compliance are recommended to reduce risk and enhance trust.

Recommendations

  1. Enable DNSSEC on the domain to protect against DNS spoofing and improve DNS security.
  2. Implement comprehensive security headers including CSP, HSTS, X-Frame-Options, and X-Content-Type-Options.
  3. Update JavaScript libraries to current versions to mitigate known vulnerabilities.
  4. Add explicit cookie policy and consent mechanisms to comply with GDPR and enhance user privacy transparency.
  5. Publish an incident response and vulnerability disclosure policy to improve security culture and readiness.

Contact details published on the site

Legal name
Mailnatives s.r.o.
VAT number
CZ07891768
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Mailnatives s.r.o.
Description
Tools and services for professional email marketing including lead gathering, transactional email delivery, email editing, and email validation.
Key services
Mailocator - lead gathering, Mailsmitter - transactional email delivery, Mailiana - email editor, Mailcolm - email validation
Content quality
good
Branding
consistent

Technology

Stack
jQuery 1.10.2, CSS, Google Fonts (Quicksand)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
60/100
Good practices seen
  • HTTPS implied by URL
  • No exposed sensitive data in HTML

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Marketing tools
YouTube channel for tutorials
Transparency
basic

Site quality

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

Key observations

  1. Website provides a suite of professional email marketing tools targeting agencies and marketers.
  2. Clear contact information and testimonials enhance trust.
  3. No explicit privacy or cookie consent mechanisms detected, which is a compliance gap.
  4. Technical stack is somewhat dated (jQuery 1.10.2) but functional.
  5. No security headers detected; DNSSEC not enabled.
  6. No signs of malicious or adult content.
  7. WHOIS data supports legitimacy and business consistency.
Technical notes

Notes

The website is built on a custom or unknown CMS platform using legacy JavaScript (jQuery 1.10.2) and standard CSS stylesheets. Google Fonts are used for typography. The site loads multiple SVG and PNG images for branding and UI elements. Performance is moderate with no major blocking resources detected. Mobile optimization is good with viewport meta tags and responsive CSS. Accessibility features are basic, including skip links for navigation. SEO is basic with meta description and robots tags but no Open Graph or JSON-LD structured data detected. Hosting appears to be via DNS providers active24.cz and active24.sk, but no direct hosting provider or CDN is identified. The technical stack is functional but would benefit from modernization and enhanced security configurations.
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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