Google Voice and Gmail are sort of merging
Two new little Google Voice features just made their way into Gmail. A new option lets text messages sent to Google Voice show up as e-mail messages in Gmail. You can reply to messages from Gmail, too, which makes it a nice platform for carrying on a text message conversation.
http://news.cnet.com/8301-19882_3-10349110-250.html?part=rss&subj=news&tag=2547-1_3-0-20