Yes, every kindle has a special kindle email address.  However, each file costs 15 cents (US), so most folks block emails to one or two specific senders (it's fairly easy to do that on your account page at Amazon).
<div><br /></div>
<div>Mine, for instance, will only receive emailed files from my own personal email address.</div>
<div><br /></div>
<div>Josh</div>
<div><br /><br />
<p>On May 27, 2010, <strong>Marcello Perathoner</strong> &lt;marcello@perathoner.de&gt; wrote:</p>
<div class="replyBody">
<blockquote class="email_quote" style="border-left: 2px solid #267fdb; margin: 0pt 0pt 0pt 1.8ex; padding-left: 1ex;">Jim Adcock wrote:<br />&gt; Strange, what I notice when I go to Amazon&rsquo;s &ldquo;new and improved&rdquo; Kindle books <br />&gt; site is that they now list a &ldquo;Free Book Collections&rdquo; section which includes <br />&gt; instructions on how to get **free** books for Kindle **directly** from the <br />&gt; Internet Archive, Project Gutenberg, and Manybooks web sites!<br /><br />What's this "e-mail the file to your Kindle" thingie?<br /><br />Does every Kindle have an email address?<br /><br />Would it make sense to offer an email-to-kindle option on the Gutenberg <br />site?<br /><br /><br /><br />-- <br />Marcello Perathoner<br /><a class="parsedEmail" href="mailto:webmaster@gutenberg.org" target="_blank">webmaster@gutenberg.org</a><br />_______________________________________________<br />gutvol-d mailing list<br /><a class="parsedEmail" href="mailto:gutvol-d@lists.pglaf.org" target="_blank">gutvol-d@lists.pglaf.org</a><br /><a class="parsedLink" href="http://lists.pglaf.org/mailman/listinfo/gutvol-d" target="_blank">http://lists.pglaf.org/mailman/listinfo/gutvol-d</a><br /></blockquote>
</div>
</div>