Google is working to improve the performance of Hotmail . The Web - based e - mail service , once a dominant player , is losing steam . Hotmail still holds the highest market share worldwide , followed by Yahoo Mail and then Gmail , according to research firm ComScore . Hotmail has a long list of competitors , including Apple , Facebook , Twitter .
Google is working to improve the performance of Hotmail . The Web - based e - mail service , once a dominant player , is losing steam . Hotmail has a long list of competitors , including Apple , Facebook , Twitter .