⚡ Webmail in the United Kingdom

Webmail software lets users access and manage email directly through a web browser.

The United Kingdom of Great Britain and Northern Ireland (UK) is a Western European country with a population of over 67 million people.

According to our statistics, webmail software is used on 0.01% of websites from the United Kingdom.

⭐ Most Popular in 2026

The following chart shows the top webmail software in the United Kingdom in 2026, based on market share.

The most popular is Roundcube, which dominates the market with an overwhelming 61.9% share.
It is followed by Outlook on the web with 19% and Mailcow with 19%.

Roundcube 61.9%
Outlook on the web 19%
Mailcow 19%
Other 0.1%

✨ Best Webmail Software

Below is a more detailed list of 3 webmail software solutions used on sites from the United Kingdom, ranked by their market share.

Rank	Name	Market share
1	Roundcube A browser-based multilingual IMAP client. FreeOpen source$$$	61.9%
2	Outlook on the web Redmond, Washington, United States A web-based app included in Microsoft 365 that allows users to access their email, calendar, and contacts.	19%
3	Mailcow Willich, Germany An open-source groupware/email suite based on Docker. FreeOpen source	19%

👉 See Also

🌎 Webmail in other countries

Data is based on the analysis of 157,370 websites from the United Kingdom.
Statistics were last calculated on March 21, 2026.
For details, see our methodology and disclaimer.