listmonk.app
listmonk - Free and open source self-hosted newsletter, mailing list manager, and transactional mails
Last scanned Jul 27, 2026, 5:43 PM
Overall score
Great
Summary
Send e-mail campaigns and transactional e-mails. This website is hosted on Fastly. SEO is good (80/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.
Send e-mail campaigns and transactional e-mails. High performance and features packed into one app.
- United States
- Hosted on Fastly
Top issues to fix
9 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.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
+3 more issues — details in the sections below.
SEO
3 issue(s) found
Performance
229 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Send e-mail campaigns and transactional e-mails. High performance and features packed into one app.
Meta tags
- Title
- listmonk - Free and open source self-hosted newsletter, mailing list manager, and transactional mails
- Description
- Send e-mail campaigns and transactional e-mails. High performance and features packed into one app.
- Canonical
- https://listmonk.app/
- Language
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1,minimum-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
No technologies detected.
Hosting & CDN
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- listmonk.app
- Valid from
- Jun 27, 2026
- Valid to
- Sep 25, 2026
- Days until expiry
- 59
- SAN domains
- listmonk.app, www.listmonk.app
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 10 · H3 3
Links
5 internal · 22 external · 2 broken
Images
28 total · 5 missing alt
Scripts / Styles
1 scripts · 3 stylesheets
JS / CSS size
19.1 KB · 6.4 KB
Page size
10.2 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- 2
SEO issues
- Title longer than 60 characters
- No structured data (JSON-LD) found
- robots.txt not found
Accessibility issues
- Missing <html lang> attribute
Scan details
- Requested URL
- https://listmonk.app
- Final URL
- https://listmonk.app
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 229 ms
- HTML size
- 10.2 KB
- Redirect chain
- https://listmonk.app
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does listmonk.app use?
- We did not detect any specific technologies for listmonk.app in the latest scan.
- Is listmonk.app secure (HTTPS)?
- Yes. listmonk.app uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 25, 2026.
- Who hosts listmonk.app?
- listmonk.app is hosted on Fastly, behind Fastly CDN.
- What is listmonk.app's SEO score?
- listmonk.app scored 80/100 for SEO in the latest analysis (great).
- What is listmonk.app's overall website score?
- listmonk.app has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card