Market Share by Top Websites

1 Microsoft Exchange Online is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 Despite its recent growth, Yahoo Business Email is still behind Microsoft Exchange Online in all market share segments.

Websites Categories

1 Microsoft Exchange Online has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Internet & Telecom, Shopping and 242 other categories.

2 Yahoo Business Email hasn't got a lead over Microsoft Exchange Online in any websites category.


1 Microsoft Exchange Online is leading in most countries, including United States, United Kingdom, Brazil, Netherlands and 224 other countries.

2 Yahoo Business Email is leading in Russia, Ukraine, Belarus, Kazakhstan and 8 other countries.