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Inboxflip

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Productivity

inboxflip.com · Added June 23, 2026 · Last analysed June 23, 2026 · via · 43% 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 23 June 2026; the live site may have changed since.

Inboxflip ships with the launch fundamentals in place, with complete legal pages, a complete set of security headers, and a thorough launch checklist. What needs work: incomplete email security.

Launched on Product Hunt on June 23, 2026. The site is hosted on Hostinger International Limited in Ukraine, with a domain registered 6 months before launch. We've detected 12 technologies on this site, covering javascript library, analytics, consent tooling, and CSS frameworks. The stack includes Google, Tailwind CSS, and Google Analytics.

It's running the same core stack as 459 other launches and tighter on security headers than most Product Hunt launches.

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

10.0
StackScope Score
Excellent
100/100 Launch Readiness
Launch ready
3/3 Legal
Complete
2/2 Web Standards
Complete
Vibe Score 13 · Few AI signals
Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (12)

Infrastructure
Hosting Hostinger
Protocol HTTP/3
Security HSTS
Email
Transactional email Mailgun (2)
Build & Framework
CSS framework Tailwind CSS
Developer tools Vite
JavaScript library Motion
React Router
Analytics & Marketing
Analytics Google Analytics
Consent Google
SEO Google Search Console
Tag management Google Tag Manager (2)

Infrastructure

DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
SSL Certificate
Let's Encrypt
Valid 8 Jun 2026 to 6 Sep 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
6 months
Registered Dec 2025 · HOSTINGER operations, UAB

Email Security

SPF ~all Soft-fail (~all). Common and accepted.
?
DKIM Not detected at common selectors. Your provider may use a custom one.
DMARC Not published. Receivers fall back to permissive defaults.
?
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)
Page title is 64 characters (advisory) Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible.

Performance How?

260 ms Server response
62% Faster than peers
544 ms Largest contentful paint
0.00 Cumulative layout shift
126 KB Page weight
2 Third-party domains
0 Console errors
0 Failed requests

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 palette signals +5
AI writing signals +5
AI iconography signals +3

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

sitemap.xml (22 URLs)
llms.txt
ads.txt
humans.txt
Consent manager: Google
86% unique

Security Headers (6/6)

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

Build

3 JS files
2 CSS files
2 Third-party domains

Brand Colours

App Manifest

Inboxflip — Free Disposable Temp Mail
display: standalone 3 icons
theme #0f172a
productivity utilities
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.