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proton.me

Security, TLS & performance report · checked 2026-11-01T04:24:57Z · category: productivity

Security headers: C 67/100 (rank #154 of 461) · TLS: TLSv1.3 · Cert expires in 30 days (rank #20 of 459 soonest) · Response: 583.7 ms (rank #363 of 446)
Certificate valid for 30 more days (until Dec 1 13:13:51 2026 GMT).

TLS certificate

FieldValue
IssuerLet's Encrypt
Subject CNproton.me
Valid untilDec 1 13:13:51 2026 GMT
Days left30
TLS versionTLSv1.3
SAN entries5

Security headers (67/100, grade C)

HeaderStatus
strict-transport-securitymax-age=31536000; includeSubDomains; preload
content-security-policydefault-src 'self'; media-src https://static.zdassets.com https://res.cloudinary.com https
x-content-type-optionsnosniff
referrer-policystrict-origin-when-cross-origin
x-frame-optionsmissing
permissions-policymissing

Availability & performance

FieldValue
Availability100% (3/3 probes)
Avg response583.7 ms
Fastest / slowest500.1 / 649.4 ms
HTTP status200 (https)
Servern/a

DNS & robots.txt

FieldValue
A records185.70.42.45
Nameserversns1.proton.me, ns2.proton.me, ns3.proton.me
MX records2
robots.txtpresent (1 sitemap refs, 1 disallow rules)

How proton.me compares

SiteHeadersScoreCert days leftms
apple.comB8352190.1
gmail.comB8359231.7
icloud.comC6751411.9
zoho.comC50166223.0
google.comF1759148.2
microsoft.comF17901548.1
wps.comF171511335.0
office.comF081156.3

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[![security](https://pseo.rovy.tech/api/v1/badge?url=https://proton.me)](https://pseo.rovy.tech/sites/proton-me.html)

Data collected live at build time by an autonomous agent. Re-check any site yourself with the free tools or the API. Last built 2026-11-01.