Sigmail
Create branded email signatures with real-time analytics and 40% average CTR. Free to start.
sigmail.co
· Added June 26, 2026
· Last analysed June 26, 2026 · via 
· 71% 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 26 June 2026; the live site may have changed since.
Sigmail is largely in shape, with complete legal pages, a thorough launch checklist, and well-configured email security. Main gaps: missing several security headers.
Launched on Product Hunt on June 26, 2026. The site is hosted on Google LLC in the United States. The crawl picked up 17 technologies on this site, covering business email, security, affiliate, and AI builders. The stack includes Tailwind CSS, Cloudflare, and Cloudflare Bot Management.
For context, it's on one of the most common stacks we track, shared by 496 launches.
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Tech Stack (17)
| CDN |
Cloudflare
|
| DNS |
GoDaddy DNS
|
| Hosting |
Google Cloud
|
| Protocol | HTTP/3 |
| Security |
Cloudflare Bot Management
|
| HSTS |
| Business email |
GoDaddy Email
|
Microsoft 365
|
| CSS framework |
Tailwind CSS
|
| Developer tools |
Vite
|
| Font |
Google Fonts
|
| UI library |
shadcn/ui
|
| Video |
Vimeo
|
| Affiliate |
FirstPromoter
(2)
|
| SEO |
Google Search Console
|
| AI builder |
Replit
|
| Backend framework |
Express
|
Infrastructure
Email Security
Storage (3)
| Name | Lifetime | Detected as |
|---|---|---|
| GAESA | 29d | - |
| _cfuvid | session | Cloudflare |
| __cf_bm | < 1h | Cloudflare |
Readiness Breakdown How?
Performance How?
⚠ 169 images: 119 oversized, 146 without width/height, 3 missing alt text
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?
| Signal | Points |
|---|---|
| AI CSS signals | +10 |
| AI copy signals | +5 |
| AI palette signals | +5 |
| AI writing signals | +3 |
| Recognised AI builder signature | +100 |
| AI typography signals | +15 |
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.