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InboxPlan

Stop landing in spam. InboxPlan mimics human behavior with AI-generated content to boost sender reputation.

inboxplan.com · Added June 23, 2026 · Last analysed June 23, 2026 · via · 40% unique tagline (similar to Mailwarm 2.0 (YC S20))

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 23 June 2026; the live site may have changed since.

InboxPlan ships with the basics, with complete legal pages. Worth fixing first: missing several security headers, no robots.txt or sitemap, and incomplete email security.

Launched on Product Hunt on June 23, 2026. The site is hosted on Amazon.com in the United States, with a domain registered in 2021. We've detected 11 technologies on this site, covering javascript library, servers, CSS frameworks, and developer tools. The stack includes Tailwind CSS, Caddy, and Cloudflare DNS.

It's running the same core stack as 5,013 other launches.

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

Vibe Score 20 · Few AI signals
Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (11)

Infrastructure
DNS Cloudflare DNS
Protocol HTTP/3
Server Caddy
nginx
Email
Business email Google Workspace (2)
Build & Framework
CSS framework Tailwind CSS
Developer tools Vite
Font Google Fonts
JavaScript library React Router
Zod
Analytics & Marketing
SEO Google Search Console

Infrastructure

Network
AS16509 · US
DNS
Cloudflare DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Let's Encrypt
Valid 16 Jun 2026 to 14 Sep 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
4.8 years
Registered Sep 2021 · Name.com, Inc.

Email Security

SPF Not published. Your domain can be spoofed in phishing emails.
DKIM Detected via known email provider
DMARC p=reject Reject (strict). Strong.
?
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 (2)

Local storage (2)
KeySizeDetected as
admin-storage 36 B -
auth-storage 35 B -

Readiness Breakdown How?

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

Performance How?

628 ms Server response
26% Faster than peers
2960 ms Largest contentful paint
0.01 Cumulative layout shift
1.3 MB Page weight
3 KB Image weight
2 Third-party domains
2 Console errors
2 Failed requests

6 images: 6 oversized, 6 without width/height

Broken first-party requests (2), worth fixing
  • 401 /api/web/admin/auth/current
  • 401 /api/web/auth/current

Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.

Vibe Score Breakdown How?

SignalPoints
AI copy signals +5
AI onboarding signals +5
AI palette signals +5
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

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

Well-Known Files

robots.txt
sitemap.xml
security.txt
llms.txt
ads.txt
humans.txt
92% unique

Security Headers (0/6)

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

Build

1 JS files
2 CSS files
2 Third-party domains

Brand Colours

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.