Global Web Mail Usage Statistics and Market Share - RoundCube, SquirrelMail, Zimbra, Outlook Web App, RainLoop, Sympa, CrossBox...

We are tracking usage statistics and market share of 7 web technologies in Web Mail. In August 2022 the most popular web technology in Web Mail is RoundCube with 66% market share. In second place there is SquirrelMail with 15% market share. After that there are Zimbra with 10%, Outlook Web App with 3% and RainLoop with 3% market share. Top 5 web technologies together have 96% market share. The remaining 2 web technologies in Web Mail have a combined market share of 4%.

Web Mail Market Share in August 2022
About Web Mail

Web mail is an email client implemented as a web application running on a web server.

We are tracking 7 different technologies in Web Mail.

There are 4,183 websites using Web Mail in out database.

Web Mail Usage Statistics and Market Share in August 2022
Technologies in Web Mail
  • RoundCube RoundCube

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

  • SquirrelMail SquirrelMail

    SquirrelMail is an open-source web-mail package that is based on PHP language. It provides a web-based-email client and a proxy server for IMAP protocol.

  • Zimbra Zimbra

  • Outlook Web App Outlook Web App

    Outlook on the web is an information manager web app. It includes a web-based email client, a calendar tool, a contact manager, and a task manager.

  • RainLoop RainLoop

    RainLoop is a web-based email client.

  • Sympa Sympa

    Sympa is an open-source mailing list management (MLM) software.

  • CrossBox CrossBox

    CrossBox is a webmail client.

Web Mail Market Share History in Last 12 Months
Technology September 2021October 2021November 2021December 2021January 2022February 2022March 2022April 2022May 2022June 2022July 2022August 2022
RoundCube66.73%66.67%66.67%66.60%66.51%66.51%66.38%66.34%66.22%66.14%65.86%65.93%
SquirrelMail14.95%14.96%14.93%14.94%14.85%14.81%14.85%14.80%14.80%14.79%14.73%14.68%
Zimbra8.76%8.88%8.94%9.02%9.18%9.20%9.28%9.36%9.44%9.53%9.92%9.92%
Outlook Web App6.56%6.49%6.47%6.44%6.47%6.48%6.49%6.50%6.52%6.52%6.49%6.48%
RainLoop2.93%2.93%2.92%2.93%2.92%2.91%2.91%2.91%2.92%2.92%2.91%2.89%
Sympa0.07%0.07%0.07%0.07%0.07%0.07%0.07%0.07%0.07%0.07%0.07%0.07%