Websites Using Proton Mail

Proton Mail is the world’s largest secure email service with over 70 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.

Categories: Webmail

Official website: https://proton.me/mail

787 websites using Proton Mail

Proton Mail is ranked #4 of 12 in Webmail by website adoption.

Webmail alternatives ranked by popularity

Google Workspace — 39,051 websites
Microsoft 365 — 24,265 websites
Apple iCloud Mail — 10,522 websites
CrossBox — 0 websites
Open-Xchange App Suite — 0 websites
Outlook Web App — 0 websites
RainLoop — 0 websites
RoundCube — 0 websites
SquirrelMail — 0 websites
Sympa — 0 websites

Technologies commonly used with Proton Mail

Cloudflare — 71% co-occurrence
HTTP/3 — 56% co-occurrence
Open Graph — 51% co-occurrence
HSTS — 39% co-occurrence
PHP — 30% co-occurrence
Cloudflare WAF — 29% co-occurrence
PWA — 29% co-occurrence
Schema.org — 27% co-occurrence

How WhatStack detects Proton Mail

WhatStack detects Proton Mail by analyzing HTTP headers, HTML source code, JavaScript globals, meta tags, cookies, DNS records, and ads.txt entries using signature-based pattern matching across 10 different analyzers.

Frequently Asked Questions

What is Proton Mail?: Proton Mail is the world’s largest secure email service with over 70 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.
How many websites use Proton Mail?: WhatStack has detected Proton Mail on 787 websites in our database.
How do you detect Proton Mail?: We analyze HTTP headers, HTML source, JavaScript globals, meta tags, cookies, DNS records, and ads.txt entries to identify Proton Mail with high accuracy using signature-based pattern matching.