HTTP Headers Analysis for https://feedback.mailercloud.com

Detected Technologies from Headers

See all in URL Inspect 2

Heroku

Stripe

HTTP Security Headers

Status

Strict-Transport-Security

Good

max-age=63072000; includeSubDomains

Content-Security-Policy

Missing

Not configured Analyze

Content-Security-Policy-Report-Only

Basic

default-src; font-src; img-src; +3 more Analyze

X-Frame-Options

Good

SAMEORIGIN

X-Content-Type-Options

Good

nosniff

Referrer-Policy

Good

strict-origin-when-cross-origin

Permissions-Policy

Missing

Not configured

Recommendations

• Consider adding 'preload' to HSTS for maximum security
• Add Content-Security-Policy header to prevent XSS attacks
• Consider adding Permissions-Policy to control browser features

Performance Headers

Connection

Performance

close

Transfer-Encoding

Performance

chunked

Vary

Performance

Accept-Encoding, Origin

connection: close
transfer-encoding: chunked
vary: Accept-Encoding, Origin

Caching Headers

Cache-Control

Caching

max-age=0, private, must-revalidate

Etag

Caching

W/"c0f94c8e5c08395c6d50731f6c3c5611"

cache-control: max-age=0, private, must-revalidate
etag: W/"c0f94c8e5c08395c6d50731f6c3c5611"

Content Headers

Content-Type

Content

text/html; charset=utf-8

content-type: text/html; charset=utf-8

Server Headers

Server

Heroku

X-Runtime

Server

0.028161

server: Heroku
x-runtime: 0.028161

CORS Headers

No CORS headers found

Cookies Headers

Set-Cookie

Cookies

set-cookie: _feedbear_session=Lnzxg28mTva3vB88VgiXGZq6ODk%2F1e%2Bj921O%2FDcDtjZ%2FdW5zV70a26W%2BNDoV17cJrQs16%2FEAOEP%2F4So4wRnJzlddHxmtq0obuAurYxudds7e%2FbJ70CpCJJDwafiNesbx83UjHgB9BYjnAjrLlatIEP4j8sVz16wGm0NbKD29JFGfnmOjW%2FmtaZS9h6WY0SN%2FzwdJsPHFn18joxkovjy2oXThNW0WhnrkvDQdpg0nowMxCrKffHhW5JhgLPieUut2uBlok9yFCvxRZ9lukLuo4VHUZghS4ksMwY7dtoiJWQ%2FvMolCaS%2F%2Fvkvgf5As2xxd4XQVSJU%3D--fmuEDE0ccpMyYvlH--1ZzDtx7Ru9rya%2FOBv%2BTxdg%3D%3D; domain=.feedback.mailercloud.com; path=/; secure; HttpOnly; SameSite=None

Other Headers

Date

Other

Mon, 11 May 2026 00:55:36 GMT

Nel

Other

Report-To Group heroku-nel max-age: 1h

success: 1.0% failure: 10.0%

Report-To

Other

Group heroku-nel max-age: 1h

Endpoint 1 https://nel.heroku.com/reports?s=S7Es99h3rNmF86HFLqhf3QNcH3%2BrQLCwk80dthVzkCU%3D&sid=c4c9725f-1ab0-44d8-820f-430df2718e11&ts=1778460936

Reporting-Endpoints

Other

heroku-nel="https://nel.heroku.com/reports?s=S7Es99h3rNmF86HFLqhf3QNcH3%2BrQLCwk80dthVzkCU%3D&sid=c4c9725f-1ab0-44d8-820f-430df2718e11&ts=1778460936"

Via

Other

1.1 heroku-router

X-Download-Options

Other

noopen

X-Permitted-Cross-Domain-Policies

Other

none

X-Request-Id

Other

98217459-a6be-4563-47a5-a009445fee54

date: Mon, 11 May 2026 00:55:36 GMT
nel: {"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1}
report-to: {"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=S7Es99h3rNmF86HFLqhf3QNcH3%2BrQLCwk80dthVzkCU%3D\u0026sid=c4c9725f-1ab0-44d8-820f-430df2718e11\u0026ts=1778460936"}],"max_age":3600}
reporting-endpoints: heroku-nel="https://nel.heroku.com/reports?s=S7Es99h3rNmF86HFLqhf3QNcH3%2BrQLCwk80dthVzkCU%3D&sid=c4c9725f-1ab0-44d8-820f-430df2718e11&ts=1778460936"
via: 1.1 heroku-router
x-download-options: noopen
x-permitted-cross-domain-policies: none
x-request-id: 98217459-a6be-4563-47a5-a009445fee54

Recommendations

Enable compression (gzip/brotli) to improve performance