claws-mail.org

https://claws-mail.org· First analyzed 03 May 2026· Updated 03 May 2026

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claws-mail.org

Mobile

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Hosting Provider

Gandi

gandi.net

IP Address

217.70.191.162

Site Location

🇫🇷 Francevia ip

Server Location

🇫🇷 Paris, France

ASN

AS29169

Server

Apache

Nameservers

ns-12-a.gandi.net.ns-129-c.gandi.net.ns-134-b.gandi.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

340 ms10%

Speed Index

442 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

59 KB

7 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Gandi

Technology Stack

1 Technologies Detected

Web Servers

Apache

SEO Analysis

D41/100

Meta Tags7/15

Content7/12

Headings1/8

Technical8/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

claws-mail.orgclaws-mail.org

Claws Mail - The user-friendly, lightweight, and fast e-mail client

No description available for this page.

Title Length67 chars

Recommended: 50-60 chars (~395px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (4)

• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (3/4) — critical for accessibility and SEO

13 issues found

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Crawlability

Sitemap

robots.txt

26 rules

Local SEO

Local Search Readiness

0/100

Poor

15 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

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AI & LLM Readiness

F26/100

Bot Access

15/25

Machine Read.

5/25

Schema Data

0/25

Citation

6/25

AI Bot Access

9/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

def. lists

Text ratio:32%

Words:166

Token eff.:Too Short

Sections/1K:6

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary35w

Descriptive Headingsavg 3w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

AI readiness recommendation preview...

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

54/100

Passed

Critical

Warnings

Images & Alt Text

10/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

4/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

1/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

4 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

72/100

A+

6 mg

CO₂e / view

58.8 KB

Page Weight

95%

Cleaner Than

New Visitor

7 mg

Returning (cached)

3 mg

Annual (10K/mo)

708 g

Emission Segments

Data Center

<0.001 g

Network

2 mg

Device

4 mg

Resource Breakdown

Images

52.9 KB

CSS

4.1 KB

HTML

1.8 KB

Green Hosting Verified

Gandi

Provider Match

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

76%Good

Static / Informational

HTTPS

No WAF

42d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

16.03.2026

Valid Until

14.06.2026

Subject Alternative Names (2)

claws-mail.orgwww.claws-mail.org

SHA-256 Fingerprint

8F:06:48:24:28:88:A8:85:2C:9F:17:4F:86:EF:C6:87:BF:D3:FE:89...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

1531

content-type

text/html; charset=UTF-8

date

Sun, 03 May 2026 04:20:31 GMT

keep-alive

timeout=5, max=100

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

claws-mail.org

Domain Information

claws-mail.org

Domain Age

19y 6m

Created

01.11.2006

Expires

01.11.2029

Last Updated

29.05.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

30/100

Not Mobile Friendly

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Bitstream Vera Sans

WCAG AAA

64/100

Readability

/30

18/30

15px · LH --

Hierarchy

/20

8/20

WCAG

/25

24/25

9.4:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Bitstream Vera Sans

Sans

Body Font

Bitstream Vera Sans

Sans15px

Contrast Ratio

9.4:1

WCAG AAA (≥7:1)

Reading Comfort

Single Font Family

left aligned

18px

15px

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Hard to read: Flesch score 44/100. Simplify sentences for wider reach.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 9.4:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 1 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 44

Color Palette

7 unique colors

5.66:1 AA Light

#f1f1f1

Background· 79.8%

#5a5f6b

Secondary· 1.8%

#a5c3fe

Primary· 8.2%

#9ab7ec

Accent· 2.3%

#b0b6ca

Secondary· 2.2%

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Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Website Identity

claws-mail.org

19 years old

Location detected: 🇫🇷 Francevia ip

Gandi SAS

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Last analyzed: 03 May 2026 at 04:20

Historical Analysis & Change Tracking