In an internal email sent to employees, Jeff Bonforte, Yahoo's SVP of Communications Products and Randy Roumillat, Yahoo's CIO, begged recipients to stop using Microsoft's Outlook.com email service. According to the email 75 percent of Yahoo staffers haven't switched from Microsoft to Yahoo Mail. "Earlier this year we asked you to move to Yahoo Mail for your corporate email account," reads the email. "25% of you made the switch (thank you). But even if we used the most generous of grading curves (say, the one from organic chemistry), we have clearly failed in our goal to move our co-workers to Yahoo Mail."