Skip to main content

Security report for emailonacid.com

eoacomdev · Technology · N/a

Low risk. 2 critical or high findings in SSL/TLS.

Security score

84/100

Risk levelLow

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

Email on Acid is a technology company specializing in email pre-deployment solutions, offering a comprehensive SaaS platform that enables marketers and developers to build, test, optimize, and analyze email campaigns. The company holds a strong market position as a leading provider in email testing and analytics, supported by industry certifications such as SOC 2 type 1, ISO 27001, and GDPR compliance. Their platform targets email marketing professionals seeking to improve campaign quality and ROI through advanced testing and analytics tools. Technically, the website is built on WordPress with modern SEO and performance optimizations, including the use of Yoast SEO, WP Rocket, and integrations with Google Analytics, Google Tag Manager, RudderStack, and Qualified for marketing and analytics. The site demonstrates excellent mobile optimization, accessibility, and SEO practices, contributing to a fast and user-friendly experience. From a security perspective, the company emphasizes compliance and certifications, though some security headers are not explicitly detected. The site uses HTTPS and secure forms, and includes cookie consent mechanisms aligned with GDPR. However, the absence of WHOIS registration data introduces some uncertainty regarding domain legitimacy, though the professional presentation and certifications mitigate this concern. Overall, Email on Acid presents a mature and trustworthy digital presence with strong business credibility and technical infrastructure. The main risk lies in the lack of publicly available domain registration data, which should be monitored. Strategic recommendations include enhancing security headers, publishing incident response contacts, and establishing a vulnerability disclosure policy to further strengthen trust and security posture.

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

2 findings rated critical or high. Fix these first.

  1. 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
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching emailonacid.com

This scan found 14 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
57
Security headers
85
Email security
82
DNS health
85
Network security
100
GDPR outside view
95
Average
84

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 emailonacid.com, from OffSeq Breach.

Total records
3,052
Employees
0
Customers
3,009
Third parties
43
Weak passwords
10%

8 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 emailonacid.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

Email on Acid operates in the technology sector, focusing on email marketing tools that streamline campaign QA and analytics. Their SaaS business model targets marketing teams and developers, offering scalable solutions to improve email deliverability and engagement. The company leverages partnerships with Sinch Email, Mailjet, and Mailgun, indicating a robust ecosystem. Their market positioning as a leader is supported by certifications and a comprehensive product suite. Growth indicators include active content updates, extensive resource offerings, and integration with advanced analytics platforms. The company maintains a professional brand image with consistent messaging and trust signals such as testimonials and security compliance.

Security posture

The security posture of Email on Acid is solid, with adherence to recognized standards like SOC 2 type 1, ISO 27001, ISO 27701, and GDPR compliance. The website uses HTTPS exclusively and implements cookie consent mechanisms. However, explicit security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options are not detected, representing an area for improvement. No vulnerabilities or exposed sensitive data were identified in the analysis. Incident response information and vulnerability disclosure policies are not publicly available, which could be enhanced to improve transparency and readiness. Overall, the company demonstrates a mature security culture but should address these gaps to align with best practices fully.

Recommendations

  1. Implement and enforce security headers including CSP, HSTS, and X-Frame-Options to enhance protection against common web attacks.
  2. Publish a dedicated incident response page with clear contact channels for security issues to improve transparency and responsiveness.
  3. Establish and publicize a vulnerability disclosure policy or security.txt file to encourage responsible reporting of security issues.
  4. Regularly audit third-party scripts and dependencies to ensure no vulnerable libraries are included.
  5. Maintain and update privacy and cookie policies to reflect evolving regulations and ensure ongoing GDPR compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
eoacomdev
Description
Email on Acid is the leading email pre-deployment checklist and a configurable part of your email marketing workflow, from accessibility checks to email previews.
Key services
Campaign Precheck, Email Testing, Email Analytics, Email Accessibility, Image Validation, Inbox Display
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, Yoast SEO plugin, Google Analytics, Google Tag Manager, RudderStack, Qualified, WP Rocket
Platforms
WordPress
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enabled
  • Secure forms with validation
  • Cookie consent mechanism
  • Security certifications displayed

Analytics and tracking

Services
Google Analytics, Google Tag Manager, Qualified, RudderStack
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Qualified, RudderStack
Marketing tools
Qualified, RudderStack
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 technology and testing services
  3. Good privacy and cookie compliance with visible consent mechanisms
  4. Security certifications prominently displayed, but some security headers missing
  5. No WHOIS data available, which is unusual and warrants caution
  6. Multiple trusted third-party integrations for analytics and marketing
Technical notes

Notes

The website is built on WordPress CMS, enhanced with Yoast SEO for search optimization and WP Rocket for performance improvements such as lazy loading and script deferral. It integrates multiple analytics and marketing tools including Google Analytics, Google Tag Manager, RudderStack, and Qualified, indicating a sophisticated data collection and marketing infrastructure. The site is mobile-optimized with responsive design and uses modern web fonts and SVG icons for visual consistency. Performance is fast with preloading and caching strategies in place. No major technical debt or outdated technologies were detected, though hosting provider details are not explicit. The technical setup supports a robust and scalable platform suitable for enterprise use.
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 emailonacid.com. 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 emailonacid.com.

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.