How can I remove old, unwanted email addresses that are cached on my iPhone 4? My sister changed her email address, so I deleted her old one in Address Book and replaced it with the new one. It now shows both emails associated with her name when I compose a message to her. Is there a way to remove the old address?

If you use Thunderbird, you’re probably used to getting by without the bells and whistles –– or price tags –– of other, flashier mail clients. Who needs ‘em anyway, even for important operations like migrating to a new Mac or Thunderbird installation? Even if you don’t use Time Machine to back up your Mac’s drive, it’s easy to back up and restore your Thunderbird messages.

Lion’s Mail brings many new features, but it still won’t magically back up and restore your messages when you move to a new Mac or reinstall OS X. But don’t worry. It’s easy to transfer mail to a new copy of Mail, even if you don’t use Time Machine or another method to back up your Mac’s drive.