Gmail (Google), 1 billion active monthly users worldwide. Outlook (Microsoft), more than 400 million active users worldwide. Yahoo Mail (recently acquired by Verizon), 225 million active monthly users. These are the numbers of the top email providers vying for a marketplace of 2.6 billion global users, according to Radicati Group’s independent analysis.
But, what will we found if we pay attention just on the U.S. market? The U.S. is a market where 85% of all people use the internet and over 246 million are monthly email users (meaning they send at least one email per month).