The latest version of Yahoo Mail updated for users a few months ago reached a new milestone today 100 million monthly active users, TechCrunch reports.

Additional features of the new version of Yahoo Mail includes integrated notifications and messages from Facebook, Twitter, Zynga and other email providers within the interface. Yahoo has also made the client more customizable with 50 themes, improved search and made the client is speedier. Within Yahoo Mail, users can also use IM clients from Yahoo, Facebook, and Windows Live.

Yahoo has also announced that it is adding a few features after receiving customer feedback, including putting the message toolbar at the bottom of messages, the ability to switch between paginated and infinite scrolling views, and more.

Yahoo is the largest email provider in the U.S. But the email service is facing increasing competition from other clients like Gmail and Microsoft Hotmail and is losing some of its marketshare.