thunderbird.net
Thunderbird — Free Your Inbox. — Thunderbird
Last scanned Jul 21, 2026, 11:40 AM · 1 view
Overall score
Great
Top issues to fix
6 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
2 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
Summary
Thunderbird is a free email application that’s easy to set up and customize - and it’s loaded with great features!. This website is hosted on Cloudflare. SEO is good (80/100) and accessibility is excellent (100/100). Security scores good (85/100) and performance good (85/100). Top issue: No structured data (JSON-LD) found.
SEO
3 issue(s) found
Performance
629 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Thunderbird — Free Your Inbox. — Thunderbird
- Description
- Thunderbird is a free email application that’s easy to set up and customize - and it’s loaded with great features!
- Canonical
- https://www.thunderbird.net/en-US/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 172.66.166.3
- 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
- thunderbird.net
- Valid from
- May 23, 2026
- Valid to
- Aug 21, 2026
- Days until expiry
- 31
- SAN domains
- thunderbird.net, *.pi.thunderbird.net, *.thunderbird.net
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 17 · H3 0
Links
12 internal · 34 external · 2 broken
Images
21 total · 0 missing alt
Scripts / Styles
15 scripts · 2 stylesheets
JS / CSS size
2.7 MB · 5.8 KB
Page size
269 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- No structured data (JSON-LD) found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://thunderbird.net
- Final URL
- https://www.thunderbird.net/en-US/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 624 ms
- HTML size
- 269 KB
- Redirect chain
- https://thunderbird.net → https://www.thunderbird.net/ → https://www.thunderbird.net/en-US/
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Frequently asked questions
- What technology does thunderbird.net use?
- We did not detect any specific technologies for thunderbird.net in the latest scan.
- Is thunderbird.net secure (HTTPS)?
- Yes. thunderbird.net uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Aug 21, 2026.
- Who hosts thunderbird.net?
- thunderbird.net is hosted on Cloudflare, behind Cloudflare CDN.
- What is thunderbird.net's SEO score?
- thunderbird.net scored 80/100 for SEO in the latest analysis (great).
- What is thunderbird.net's overall website score?
- thunderbird.net has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
- Is thunderbird.net hiring?
- thunderbird.net has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card