Optinpa
Immediately send a welcome email to new subscribers when they sign up. No SDK, no API, no coding required. No website integrations required. Automatically email new subscribers a resource link (PDF, video, etc.) right after they sign up.
Estimated origin: Georgia
StackScope records what new websites are built with, the week they launch. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We crawled this one for its tech stack and scored it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 27 April 2026; the live site may have changed since.
Every technology below links to its own page: which other new sites launched with it. Vendors and agencies watch those pages with Stackdar and hear about new adopters the week they ship, from £15 a month.
Optinpa is largely in shape, with complete legal pages, a thorough launch checklist, and well-configured email security. Main gaps: missing several security headers and tracking cookies set before any opt-in.
Launched on Hacker News on April 26, 2026. The site is hosted on Sharktech in the United States. The crawl picked up 12 technologies on this site, covering analytics, transactional email, backend framework, and CSS frameworks. The stack includes Tailwind CSS, Amazon SES, and ASP.NET.
For context, it's on one of the most common stacks we track, shared by 7,711 launches.
If you own this site, refresh the snapshot and see the full fix list any time →
Tech Stack (12)
| DNS | Site4Now DNS |
| Server |
Microsoft IIS
(2)
|
| Business email | Site4Now Email (2) |
| Transactional email |
Amazon SES
|
Resend
|
| CSS framework |
Tailwind CSS
|
| Developer tools |
Vite
|
| Font |
Google Fonts
|
| Analytics |
Google Analytics
(3)
|
PostHog
(4)
|
|
| SEO |
Google Search Console
|
| Backend framework |
ASP.NET
(2)
|
Infrastructure
Email Security
Storage (7)
| Name | Lifetime | Detected as |
|---|---|---|
| ph_phc_kP6aC9MBYgmXaE4Qz6eD3VtrS9o49HP9LWLDUJ8NLcyy_posthog | 12mo | PostHog |
| _ga | 1y | Google Analytics |
| _ga_01Y7CY55WV | 1y | Google Analytics |
| _ga_Z5D4N7FJZV | 1y | Google Analytics |
| Key | Size | Detected as |
|---|---|---|
| ph_phc_kP6aC9MBYgmXaE4Qz6eD3VtrS9o49HP9LWLDUJ8NLcyy_posthog | 831 B | PostHog |
| Key | Size | Detected as |
|---|---|---|
| ph_phc_kP6aC9MBYgmXaE4Qz6eD3VtrS9o49HP9LWLDUJ8NLcyy_posthog | 90 B | PostHog |
| ph_phc_kP6aC9MBYgmXaE4Qz6eD3VtrS9o49HP9LWLDUJ8NLcyy_primary_window_exists | 4 B | PostHog |
Readiness Breakdown How?
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| AI copy signals | +5 |
| AI palette signals | +5 |
| AI writing 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.