Square has released its new Square Cash iPhone app that allows you to send money to anyone with an email account. The iPhone app is a companion app to the new Square Cash service that lets you send money simply by typing an email.
Anyone may compose a new email to the person they want to send money to, putting a dollar amount in the subject line (for example, "$50") and CC the message to "cash@square.com." If it's your first time sending money, you'll then get an email with a link to where you can store your debit card info. You recipient will get the money within two business days.
The companion Square Cash iPhone app shortens the time you need to spend composing emails