What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

Technology Comparison

Mailin vs Mimecast

Side-by-side comparison based on real-world adoption data from 601 detections across analyzed websites.

Market Share Distribution

Mailin (3%)Mimecast (97%)

Total Detections

Mailin

581

Mimecast

HIGHER

Websites Using

Mailin

581

Mimecast

HIGHER

Used Together

websites use both

Mailin

Email Marketing

20 detections

20 sites

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Mimecast

Email Marketing

Mimecast offers a unified cloud platform for email security, cyber resilience, and advanced threat protection. It provides comprehensive solutions for email security, archiving, continuity, and data protection, helping organizations defend against sophisticated cyberattacks and ensure business continuity.

581 detections

581 sites

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Our Analysis

Mimecast is significantly more popular than Mailin in our dataset, appearing on 581 websites compared to 20. Both are in the Email Marketing category, making them direct alternatives.

Sites Using Both (0)

No sites use both technologies together.

Only Mailin

8theme.com blockonomi.com cartoonbrew.com cookieyes.com davidicke.com designshack.net findaspring.org greenbiz.com hackread.com ihmc.us

Only Mimecast

49ers.com 6pm.com 911memorial.org 99designs.com a24films.com aad.org aaos.org aasm.org ab-inbev.com acenet.edu

Frequently Asked Questions

What is the difference between Mailin and Mimecast?

Mailin is a transactional email service provider that offers a robust API for sending emails, managing templates, and tracking delivery status. It is designed for developers and businesses needing to integrate email functionality into their applications. Mimecast offers a unified cloud platform for email security, cyber resilience, and advanced threat protection. It provides comprehensive solutions for email security, archiving, continuity, and data protection, helping organizations defend against sophisticated cyberattacks and ensure business continuity. Both belong to the Email Marketing category, making them direct alternatives.

Which is more popular, Mailin or Mimecast?

Based on our analysis of real websites, Mimecast is more widely adopted with 581 detections compared to Mailin's 20.

Can Mailin and Mimecast be used together?

In our current dataset, no websites use both technologies simultaneously. This suggests they typically serve as alternatives rather than complementary tools.

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