Proton Mail vs RoundCube

Proton Mail is the more common of the two in our index: it runs on 359 websites against 9 for RoundCube. Counts come from real scans, not vendor claims.

Proton Mail: 359
RoundCube: 9

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.

Indexed sites: 359
Share of Webmail: 1%

Well-known sites using it

reddit.com
applovin.com
shopify.com
datadoghq.com
supercell.com
tripadvisor.com

All 359 sites

RoundCube

RoundCube is free and open-source web-based IMAP email client.

Indexed sites: 9
Share of Webmail: 0%

Well-known sites using it

otenet.gr
beget.email
dhakacom.com
san.ru
serviciodecorreo.es
iol.ie

All 9 sites

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