Cloud email is gaining traction among enterprises around the world, with Microsoft used widely in large public companies and Google also a top choice.
According to Gartner, the cloud email market is still in the early stages of adoption with 13% of identified publicly listed companies globally using one of the two main cloud email vendors.
A recent study by Gartner found that 8.5% of public companies in the sample use cloud email from Microsoft's Office 365 service, while 4.7% use Google Apps for Work.
The remaining 87% of companies surveyed have on-premises, hybrid, hosted or private cloud email managed by smaller vendors.
"Although it is still early days for cloud email adoption, both Microsoft and Google have achieved significant traction among enterprises of different sizes, industries and geographies," says Nikos Drakos, Gartner research vice president.
"Companies considering cloud email should question assumptions that public cloud email is not appropriate in their region, size or industry.
“Our findings suggest that many varied organisations are already using cloud email, and the number is growing rapidly."
Among organisations using cloud email from Google and Microsoft, Microsoft is ahead in most industries, particularly in regulated industries including utilities, energy and aerospace, according to Gartner.
Google is ahead in industry segments with more competition and less regulation, such as software publishing, retail, advertising, media, education, consumer products, food and beverage, and travel, the analysts say.
"Among public companies using cloud-based email, Microsoft is more popular with larger organisations and has more than an 80% share of companies using cloud email with revenue above $10 billion," says Jeffrey Mann, Gartner research vice president.
"Google's popularity is better among smaller companies, approaching a 50% share of companies with revenue less than $50 million,” he says.
In some industries - such as travel and hospitality, professional services and consumer products - the highest usage levels are among the companies with the biggest revenue.
More than a third of companies in these industries with revenue above $10 billion use cloud email from one of these two vendors.
These findings are based on a Gartner research study. The analysts used the email server addresses in the domain records of nearly 40,000 public companies globally, to find out which ones point to cloud email services from Google or Microsoft.