Square lets you send money using e-mail

Square Cash launches as a free way to send money to anyone over e-mail, Isis hopes to lure more customers with free smoothies, and the Start button returns this week in Windows 8.1.

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In this episode of Update:

- Learn how easy it is to send money over e-mail for free with Square Cash.

- See if a free smoothie can convince you to try Isis Mobile Wallet, a new service competing with Google Wallet.

- Get tips on the new features of Windows 8.1, including how the Start button works.

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