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Aster Mail

End-to-end encrypted email that puts your privacy first.

Productivity
United States Estimated origin: United States

Added April 10, 2026 · Last analysed April 10, 2026 · via · 67% 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 10 April 2026; the live site may have changed since.

Aster Mail scores highly overall, with complete legal pages, a complete set of security headers, and a thorough launch checklist. Visible gaps: no sitemap.

Launched on Product Hunt on April 10, 2026. The site is served through Cloudflare. We've detected 9 technologies on this site, covering analytics, captcha, CDN, and DNS providers. The stack includes Astro, Cloudflare, and Cloudflare DNS.

It's on one of the most common stacks we track, shared by 274 launches and more locked down than the typical Product Hunt launch.

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

8.9
StackScope Score
Excellent
100/100 Launch Readiness
Launch ready
3/3 Legal
Complete
1/2 Crawl files
Partial
Vibe Score 10 · Few 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 (9)

Infrastructure
CDN Cloudflare (4)
DNS Cloudflare DNS
Protocol HTTP/3 (2)
Security HSTS (2)
Build & Framework
Captcha Cloudflare Turnstile
Meta-framework Astro
Analytics & Marketing
Analytics Cloudflare Web Analytics
SEO Google Search Console
Commerce & Payments
Payments Stripe

Infrastructure

Network
AS13335 · US
DNS
Cloudflare DNS
Authoritative nameserver
DNSSEC
Enabled
DNSKEY records published. DNS responses signed.
SSL Certificate
Google Trust Services
Valid 21 Mar 2026 to 19 Jun 2026
Certificate as captured in this snapshot, not a live check.

Email Security

SPF -all Strict (-all). Strong.
?
DKIM Not detected at common selectors. Your provider may use a custom one.
DMARC p=reject Reject (strict). Strong.
MTA-STS mode=enforce Enforce mode. Strong, blocks plaintext fallback.
TLS-RPT Reporting endpoint configured. Receivers can tell you about TLS failures.

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 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

Blocks AI crawlers
llms.txt published
23 AI bots blocked in robots.txt
ai-train = no
search = yes
? ai-input (not declared)
? None advertised

Well-Known Files

robots.txt
sitemap.xml
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/Aster-Privacy
Terms of Service
/terms
? Analytics present, but it set no tracking cookies on our visit (it may be opt-in-gated).
24% unique

Security Headers (6/6)

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

Performance

92ms response time
Faster than 96% of sites
2 third-party domains loaded

Build

1 JS files
1 CSS files
2 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.