To send a text message to a friend using your regular email account, you address it with the 10 digit phone number @ the email Web site URL of your friend's cell phone carrier. Note that's not the same as their main URL, it's a special one for text messaging. For example, AT&T is email@example.com, Verizon is firstname.lastname@example.org and T-Mobile is email@example.com.
In most cases you can send or receive free text messages from your email like you would any other email. It is free for you at least, although the receiver may pay to receive it depending on their text message plan.
By the time you've left your cellphone in a taxi or dropped it into a pot of soup, it's too late. All those phone numbers you had at your finger tips - your best friend, your boss, your mom - are gone. (Well, maybe you'll remember Mom's.)
President-elect Barack Obama, who will take the oath of office next week, has repeatedly acknowledged a strong attachment to his Verizon BlackBerry 8830 World Edition smartphone, a k a the BarackBerry. But in an interview last week, Mr. Obama lamented that the Secret Service and his lawyers appeared to be winning the battle to deny him this electronic link to friends, family and news of the larger world.