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Mailwarm 2.0 (YC S20)

Email warmup tool to avoid the spam folder and improve inbox placement. Since 2020, Mailwarm’s deliverability team builds sender reputation so emails reach the inbox.

France Estimated origin: France

Added June 4, 2026 · Last analysed June 4, 2026 · via

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 4 June 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.

Mailwarm 2.0 (YC S20) looks production-ready overall, 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 4, 2026. The site is served through AWS CloudFront, with a domain registered in 2019. We've detected 20 technologies on this site, covering advertising, CDN, seo, and analytics. The stack includes Next.js, React, and Tailwind CSS.

It's on one of the most common stacks we track, shared by 5,873 launches.

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

Vibe Score 35 · Some 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 (20) · Scale-up stack

Email
Business email Google Workspace (3)
Build & Framework
CSS framework Tailwind CSS
Framework React
Meta-framework Next.js (2)
Package CDN cdnjs (2)
UI library shadcn/ui
Analytics & Marketing
Advertising Facebook Pixel (2)
Google Ads (2)
Analytics Microsoft Clarity
SEO Bing Webmaster
Google Search Console
Tag management Google Tag Manager (3)
Business Tools
Chat Crisp (4)

Infrastructure

Network
AS16509 · US
DNS
AWS Route 53
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
Green hosting
Not green hosted
No green-energy record. Data from The Green Web Foundation.
SSL Certificate
Amazon
Valid 4 Feb 2026 to 5 Mar 2027
Certificate as captured in this snapshot, not a live check.
Domain Age
6.8 years
Registered Dec 2019 · Amazon Registrar, Inc.

Email Security

SPF ~all Soft-fail (~all). Common and accepted.
DKIM Detected via known email provider
DMARC p=quarantine Quarantine (moderate)
?
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 (12)

Cookies (5)
NameLifetimeDetected as
cee 2mo -
crisp-client%2Fsession%2F097fe0e9-8258-4a37-8495-9a5fcebad7ea 6mo Crisp
_fbp 2mo Facebook Pixel
_gcl_au 2mo Google Ads
__cf_bm < 1h Cloudflare
Local storage (7)
KeySizeDetected as
crisp-client/session/097fe0e9-8258-4a37-8495-9a5fcebad7ea 44 B Crisp
crisp-client/session/097fe0e9-8258-4a37-8495-9a5fcebad7ea:e 13 B Crisp
crisp-client/trigger/097fe0e9-8258-4a37-8495-9a5fcebad7ea/visit/count 1 B Crisp
crisp-client/trigger/097fe0e9-8258-4a37-8495-9a5fcebad7ea/visit/last 13 B Crisp
lastExternalReferrer 5 B -
lastExternalReferrerTime 13 B -
_gcl_ls 152 B Google Ads

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)
Meta description is 166 characters (advisory) Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear.

Performance How?

489 ms Server response
33% Faster than peers
512 ms Largest contentful paint
0.04 Cumulative layout shift
1.7 MB Page weight
143 KB Image weight
12 Third-party domains
0 Console errors
0 Failed requests

63 images: 35 oversized, 3 without width/height, 1 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?

SignalPoints
AI CSS signals +10
AI copy signals +5
AI palette signals +5
AI stack signals +10
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

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

Well-Known Files

robots.txt
sitemap.xml (126 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/privacy-policy
Terms of Service
/terms
? Analytics present, but it set no tracking cookies on our visit (it may be opt-in-gated).
86% unique

Security Headers (0/6)

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

Build

Code splitting
21 JS files
4 CSS files
12 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.