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Puzzle Inbox

Pre-warmed Google Workspace & Outlook inboxes for cold email. DNS-ready, delivered in 24-72 hours. Starting at $0.35/inbox. Trusted by 1200+ clients with 70,800+ active inboxes.

Marketing

Added April 22, 2026 · Last analysed April 22, 2026 · via PeerPush · 73% unique tagline

StackScope is a free public catalogue of indie launches. We find launches on Product Hunt, Hacker News and similar feeds, then crawl each site to detect its tech stack and score it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 22 April 2026; the live site may have changed since.

Puzzle Inbox looks production-ready overall, with complete legal pages, a thorough launch checklist, and clean crawl signals. What needs work: missing several security headers and incomplete email security.

Launched on PeerPush on April 22, 2026. The site is hosted on Netlify, with a domain registered in 2024. We've detected 12 technologies on this site, covering transactional email, AI builders, CSS frameworks, and developer tools. The stack includes Tailwind CSS, Amazon SES, and Google Domains DNS.

It's running the same core stack as 640 other launches.

If you own this site, refresh the snapshot and see the full fix list any time →

7.6
StackScope Score
Good
100/100 Launch Readiness
Launch ready
3/3 Legal
Complete
2/2 Crawl files
Complete
Vibe Score 100 · Strong AI signals
How much the site looks AI-generated. Informational pattern-match signal, not a verdict. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (12) · Indie stack

Infrastructure
DNS Google Domains DNS
Hosting Netlify (3)
Security HSTS (2)
Email
Business email Google Workspace
Transactional email Amazon SES
Resend
Build & Framework
CSS framework Tailwind CSS
Developer tools Vite
Font Google Fonts
UI library shadcn/ui
Analytics & Marketing
SEO Google Search Console
AI & Emerging
AI builder Lovable

Infrastructure

Network
AS16509 · US
DNS
Google Domains DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Let's Encrypt
Valid 16 Mar 2026 to 14 Jun 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
1.7 years
Registered Oct 2024 · Squarespace Domains LLC

Email Security

SPF ~all Soft-fail (~all). Common and accepted.
DKIM Detected via known email provider
DMARC p=none None (p=none). Monitoring only.
?
MTA-STS Not deployed. Mail to your domain can be downgraded to plaintext en route.
?
TLS-RPT Not configured. You won't hear about silent SMTP TLS handshake failures.

Storage (0)

This site uses no client-side storage we could detect on page load.

Readiness Breakdown How?

Custom title and meta description
Open Graph tags (title, image, description)
Twitter card meta tags
Canonical URL declared
Responsive viewport meta tag
Favicon present
Semantic HTML (nav, main, article)

Vibe Score Breakdown How?

SignalPoints
AI copy signals +5
AI palette signals +5
AI writing signals +5
AI iconography signals +5
Recognised AI builder signature +100
AI layout signals +5

This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.

AI Stance

Welcomes AI crawlers
llms.txt published
No AI bots blocked in robots.txt
? No directive declared
? None advertised

Well-Known Files

robots.txt
sitemap.xml (1141 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/terms
Terms of Service
/terms
84% unique

Security Headers (1/6)

Permissions-Policy experimental (check browser support)
X-XSS-Protection deprecated (use Content-Security-Policy)

Performance

359ms response time
Faster than 49% of sites
16 third-party domains loaded

Build

1 JS files
1 CSS files
16 Third-party domains
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.