Hotmailaccount users can add mailbox accounts of other email services, and send and receive mail directly from the Hotmail service. A similar service is the Inside Windows Live blog of the Outlook software, but customers are forced to install new Outlook software that is usable. They can not check mailboxes directly on the Hotmail interface. According to some statistics, more than 30 million Hotmail users have switched to other email services, which are capable of linking multiple mailboxes. With this new feature, users can set up different email accounts in Hotmail and simultaneously read, search, and reply to messages from those addresses. This feature uses POP. Microsoft also upgraded the send feature and some other special features in Hotmail such as spam filtering,
