services email in the Gmail app, but from today, Google offers you the ability to enjoy all the benefits of Google accounts, even for accounts with Yahoo, Hotmail or Outlook.
Google named the function “Gmailify†and to enable you to have protection from spam, organize your emails in the categories of Gmail, or even to see Google Now cards with information from third-party email accounts.
Source
Gmailify: new function that gives you the best of Gmail to other email accounts [video]
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