HTTP Headers Analysis for https://beta.fastmail.com

Detected Technologies from Headers

See all in URL Inspect 3

hCaptcha

Nginx

Sentry

HTTP Security Headers

Status

Strict-Transport-Security

Excellent

max-age=31536000; includeSubDomains; preload

Content-Security-Policy

Good

default-src; connect-src; img-src; +11 more Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Excellent

DENY

X-Content-Type-Options

Good

nosniff

Referrer-Policy

Present

same-origin

Permissions-Policy

Present

accelerometer=(), ambient-light-sensor=(), camera=(); +10 more

Recommendations

• Strengthen CSP by removing 'unsafe-eval'

Performance Headers

Accept-Ranges

Performance

bytes

Connection

Performance

close

Vary

Performance

Accept-Encoding

accept-ranges: bytes
connection: close
vary: Accept-Encoding

Caching Headers

Cache-Control

Caching

no-store

Etag

Caching

"6a607b9a-1cff"

Last-Modified

Caching

Wed, 22 Jul 2026 08:13:14 GMT

cache-control: no-store
etag: "6a607b9a-1cff"
last-modified: Wed, 22 Jul 2026 08:13:14 GMT

Content Headers

Content-Length

Content

7423

Content-Type

Content

text/html; charset=utf-8

content-length: 7423
content-type: text/html; charset=utf-8

Server Headers

Server

nginx

server: nginx

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Thu, 23 Jul 2026 10:37:37 GMT

Link

Other

URL https://betaapi.fastmail.com

rel=preconnect

X-Frontend

Other

phl-betaweb-01

X-Trace-Id

Other

ti_f165d52c9ccadac302db492f74e32d2b

date: Thu, 23 Jul 2026 10:37:37 GMT
link: <https://betaapi.fastmail.com>; rel="preconnect"
x-frontend: phl-betaweb-01
x-trace-id: ti_f165d52c9ccadac302db492f74e32d2b

Recommendations

Enable compression (gzip/brotli) to improve performance