Source: http://www.labnol.org/internet/tools/convert-email-text-to-mp3-files/2140/
Vozme is web based tool that turns any snippet of text into an MP3 audio file that you can either listen online or download to your local hard drive.
You just have to copy the text from a web page or an email and paste it inside the Vozme text box.
While there are tons of solutions that convert text to spoken words, what I liked about Vozme is the clutter free interface and the fact that it runs inside the browser without requiring any downloads.
Bloggers can easily integrate the Vozme feature in the site so visitors can either listen to your full blog posts or they can select a portion of text and have Vozme narrate it like a speech.
Vozme.com - Accepts Spanish, English and Italian languages. Thanks Jane.
Related: Listen to Email, Word Documents on iPod
Create MP3 Files From Text in Emails and Web Pages - Digital Inspiration