Webmail

11 technologies in this category

Every Webmail technology tracked by Ful.io, ranked by how many websites use each one. Explore the tools in this category and see which platforms lead the market.

Microsoft 365 and Google Workspace together are used by about 97.81% of all Webmail websites Ful.io tracks across 11 technologies. Microsoft 365 alone runs roughly 84.51% and Google Workspace 13.30%.

12,181,741
websites tracked
across 11 Webmail technologies
Webmail websites over time
12,181,741websites on 11 Nov 2026
10,000,00010,500,00011,000,00011,500,00012,000,00012,500,0002026-08-152026-09-232026-10-142026-11-012026-11-11
Webmail websites by countrymarket share · top 8 countries
🇺🇸United States
12%
🇩🇪Germany
6.7%
🇬🇧United Kingdom
4.2%
🇳🇱Netherlands
3.2%
🇫🇷France
3.1%
🇮🇹Italy
2.5%
🇦🇺Australia
2.3%
🇨🇦Canada
2.3%
0%3%6%9%12%
Webmail category sharetop 10 technologies
Microsoft 365 · 85%Google Workspace · 13%Apple iCloud Mail · 1.9%RoundCube · 0.2%Outlook Web App · 0%Zimbra · 0%SquirrelMail · 0%RainLoop · 0%Sympa · 0%CrossBox · 0%Others (1) · 0%85%MICROSOFT 36
Microsoft 36585%
Google Workspace13%
Apple iCloud Mail1.9%
RoundCube0.2%
Outlook Web App0%
Zimbra0%
SquirrelMail0%
RainLoop0%
Sympa0%
CrossBox0%
Others (1)0%

All Webmail technologies

TechnologyMarket shareWebsites
Microsoft 36510,295,185
Google Workspace1,620,285
Apple iCloud Mail231,527
RoundCube20,708
Outlook Web App6,018
Zimbra3,392
SquirrelMail2,358
RainLoop1,698
Sympa362
CrossBox129
Open-Xchange App Suite79
Showing all 11 of 11 technologies