What powers 
protonmail.com?
Last seen Mar 2023 · 46 technologies across 21 categories
Analytics
Matomo Analytics
since Jun 2018
CDN
CMS
Prismic
since Jun 2022
Ecommerce
Cart Functionality
since Aug 2020
Shopify
since Aug 2018
Font scripts
Font Awesome
since Jun 2018
Google Font API
since Sep 2019
Issue trackers
Sentry
since Oct 2020
JavaScript frameworks
React
since Jun 2021
JavaScript libraries
Miscellaneous
Payment processors
American Express
since Aug 2020
Apple Pay
since Aug 2020
Bitcoin
since Sep 2021
Mastercard
since Nov 2021
PayPal
since Nov 2021
Visa
since Aug 2020
Programming languages
Ruby
since Feb 2020
Recruitment & staffing
Recruitee
since Apr 2022
Security
HSTS
since Sep 2022
Shopify apps
Static site generator
Gatsby
since Jun 2022
Translation
Transcy
since May 2022
UI frameworks
Video players
YouTube
since Aug 2021
Web frameworks
Ruby on Rails
since Feb 2020
Web Servers
Apache HTTP Server
since Jun 2018
Webmail
Proton Mail
since Jan 2023
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Sep 2026 *: Restricted (was Allowed)
- Aug 2026 *: Allowed (was Restricted)
- Aug 2026 *: Restricted (was Allowed)
AI Crawlers
No AI crawlers blocked
Open Page Rank
7.73 / 10 · ranked #12,336 of all domains
2,143 referring domains · OpenPageRank
Infrastructure
- Registered Aug 2010 (16 years) via MarkMonitor Inc., renews Aug 2028
- Hosted on PROTON (185.70.42.12)
- DNS: protonmail.com
- Email: Proton Mail
- Email security: SPF (soft fail), DMARC quarantine, DNSSEC signed, CAA
- SSL: Let's Encrypt, RSA 4096, wildcard, expires Dec 2026
- Common Crawl link graph: rank 9,403, 17 hosts
- Verified with: Brave Creators, Google, Mail.ru, Yandex Webmaster
DNS records as swept Sep 2026, certificate as seen Sep 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| shop.protonmail.com | 25 |
| protonmail.com | 14 |
| careers.protonmail.com | 9 |
| account.protonmail.com | 7 |
| mail.protonmail.com | 7 |
| drive.protonmail.com | 6 |
| old.protonmail.com | 6 |
| www.protonmail.com | 6 |
| beta.protonmail.com | 3 |
| calendar.protonmail.com | 3 |