Massive Mail Improvements in iPhone 4.0 OS.

Many of the frustrations of Mail of the iPhone appear to be resolved.

Here are some of the hard and fast details:

• Fast inbox switching, organize by thread.
• More than one Exchange account.
• Unified inbox: Customers can have multiple e-mail accounts and they all can show up into one inbox.
• Encrypt all of your e-mail and attachments with your pin code

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