roundcube.net
Roundcube - Free and Open Source Webmail Software
Last scanned Jul 26, 2026, 5:47 AM
Overall score
Excellent
Summary
Free and open source webmail software for the masses, written in PHP. This website uses Cloudflare Analytics hosted on Cloudflare behind Cloudflare CDN. SEO is good (85/100) and accessibility is excellent (100/100). Security scores good (80/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.
Free and open source webmail software for the masses, written in PHP
- United States
- Hosted on Cloudflare
Top issues to fix
5 issues found · 2 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
2 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
2 issue(s) found
Performance
850 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Free and open source webmail software for the masses, written in PHP
Meta tags
- Title
- Roundcube - Free and Open Source Webmail Software
- Description
- Free and open source webmail software for the masses, written in PHP
- Canonical
- https://roundcube.net/
- Language
- en
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1, shrink-to-fit=no
- Robots meta
- index,follow
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.21.3.227
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- roundcube.net
- Valid from
- Jun 2, 2026
- Valid to
- Aug 31, 2026
- Days until expiry
- 35
- SAN domains
- roundcube.net, *.roundcube.net
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 1 · H3 0
Links
20 internal · 7 external · 2 broken
Images
6 total · 0 missing alt
Scripts / Styles
5 scripts · 4 stylesheets
JS / CSS size
83.8 KB · 0 B
Page size
19.0 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- 224
SEO issues
- No structured data (JSON-LD) found
- Missing OpenGraph tags
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://roundcube.net
- Final URL
- https://roundcube.net
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 850 ms
- HTML size
- 19.0 KB
- Redirect chain
- https://roundcube.net
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does roundcube.net use?
- roundcube.net is built with Bootstrap, Cloudflare Analytics.
- Is roundcube.net secure (HTTPS)?
- Yes. roundcube.net uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Aug 31, 2026.
- Who hosts roundcube.net?
- roundcube.net is hosted on Cloudflare, behind Cloudflare CDN.
- What is roundcube.net's SEO score?
- roundcube.net scored 85/100 for SEO in the latest analysis (great).
- What is roundcube.net's overall website score?
- roundcube.net has an overall SiteGraph score of 91/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card