7 things you didn't know you could do with Gmail

There's a reason Gmail is far and away the world's most popular e-mail program with 1.5 billion users. It has way more features than rivals. Wouldn't you like to make free phone calls from your e-mail program or translate a French e-mail into English, right from within Gmail? Google's free e-mail program, which turned 15 this week, continues to innovate. Here are seven things you can do with Gmail that you can't do with AOL, Yahoo or Microsoft Outlook.com or Hotmail.