Revision 659633 of Thunderbird

<p><strong>Thunderbird</strong> is Mozilla's mail/messaging application. These pages document Thunderbird and also provide links to documentation about the <a href="/en-US/docs/tag/MailNews" title="tag/MailNews">MailNews</a> backend which is also used in other projects such as <a href="https://wiki.mozilla.org/Penelope">Eudora/Penelope</a>, <a href="https://www.seamonkey-project.org/">Seamonkey</a>, <a href="https://nkreeger.com/correo/">Correo</a>, etc.</p>
<p>Thunderbird is Firefox's kid sibling, and is built on the same technical platform as the web browser. In development for many years, and currently one of the most popular open source email clients, it is used by millions of people around the world to bring together all their email accounts, newsgroup and feed reading in a familiar high-productivity environment.  (From early 2007 to early 2011 Thunderbird was developed by <a class="link-https" href="https://en.wikipedia.org/wiki/Mozilla_Messaging" title="https://en.wikipedia.org/wiki/Mozilla_Messaging">Mozilla Messaging</a>, a subsidiary that was owned by Mozilla.)</p>
<table class="topicpage-table">
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   <td>
    <h2 class="Documentation" id="Documentation" name="Documentation">Documentation</h2>
    <dl>
     <dt>
      <a href="https://developer.mozilla.org/en-US/docs/Simple_Thunderbird_build" title="Simple Thunderbird build">Building Thunderbird</a></dt>
     <dd>
      Information about building Thunderbird with the <a href="/en-US/docs/comm-central" title="comm-central">comm-central</a> repository. There's also information about <a href="/en-US/docs/How_comm-central%27s_build_system_works" title="How_comm-central's_build_system_works">how comm-central works</a>, how the <a href="/en-US/docs/Mailnews_and_Mail_code_review_requirements" title="Mailnews and Mail code review requirements">review process works</a> and how to use the <a href="/en-US/docs/Using_the_Mozilla_symbol_server" title="Using the Mozilla symbol server">Mozilla symbol server</a> to help with debugging.</dd>
     <dt>
      <a href="/en-US/docs/MailNews_Protocols" title="MailNews_Protocols">MailNews Protocols</a></dt>
     <dd>
      Rough documentation about mail protocols..</dd>
     <dt>
      <a href="/en-US/docs/DB_Views_%28message_lists%29" title="DB_Views_(message_lists)">Database views</a></dt>
     <dd>
      Backend information about {{ Interface("nsIMsgDBView") }} and related interfaces..</dd>
     <dt>
      <a href="/en-US/docs/Thunderbird/Thunderbird_API_documentation" title="Thunderbird API documentation">Thunderbird API documentation</a></dt>
     <dd>
      Thunderbird API documentation</dd>
     <dt>
      <a href="/en-US/docs/Extensions/Thunderbird" title="Extensions/Thunderbird/">Extension documentation</a></dt>
     <dd>
      Tutorials and tips for building Thunderbird extensions</dd>
     <dt>
      <a href="/en-US/docs/Thunderbird/Thunderbird_Automated_Testing" title="Thunderbird Automated Testing">Automated Testing</a></dt>
     <dd>
      Details of Thunderbird's automated testing facilities</dd>
     <dt>
      <a href="/en-US/docs/Thunderbird/Thunderbird_in_the_Enterprise" title="Thunderbird in the Enterprise">Thunderbird in the Enterprise</a></dt>
     <dd>
      Help with deploying Thunderbird in large organizations</dd>
    </dl>
    <p><span class="alllinks"><a href="/en-US/docs/tag/Thunderbird" title="tag/Thunderbird">View All...</a></span></p>
   </td>
   <td>
    <h2 class="Community" id="Community" name="Community">Community</h2>
    <ul>
     <li>Support is handled at <a href="https://support.mozilla.org/en-US/products/thunderbird">Mozilla Support</a></li>
     <li>Extensions questions are frequently discussed on the dev-apps-thunderbird group: {{ DiscussionList("dev-apps-thunderbird", "mozilla.dev.apps.thunderbird") }}</li>
     <li>Development discussion happens on the tb-planning mailing list:
      <ul>
       <li><a class="link-https" href="https://mail.mozilla.org/listinfo/tb-planning" title="https://mail.mozilla.org/listinfo/tb-planning">subscribe</a></li>
       <li><a class="link-https" href="https://mail.mozilla.org/pipermail/tb-planning/" title="https://mail.mozilla.org/pipermail/tb-planning/">archives</a></li>
      </ul>
     </li>
     <li><a href="https://forums.mozillazine.org/viewforum.php?f=50">Mozillazine forums</a></li>
     <li><a href="https://www.mozillamessaging.com/">Mozilla Messaging web page</a></li>
     <li><a class="link-irc" href="irc://irc.mozilla.org/thunderbird">#thunderbird on irc.mozilla.org</a> (for Users)</li>
     <li><a class="link-irc" href="irc://irc.mozilla.org/maildev">#maildev on irc.mozilla.org</a> (for Developers)</li>
     <li>a list of all <a href="https://wiki.mozilla.org/Thunderbird/CommunicationChannels" title="Thunderbird communication channels">Thunderbird communication channels</a></li>
    </ul>
    <h2 class="Tools" id="Tools" name="Tools">Tools</h2>
    <ul>
     <li><a href="https://ted.mielczarek.org/code/mozilla/extensiondev/">Extension developer's extension</a></li>
     <li><a href="/en-US/docs/DOM_Inspector" title="DOM_Inspector">DOM Inspector</a></li>
    </ul>
    <h2 class="Related_Topics" id="Related_Topics" name="Related_Topics">Related Topics</h2>
    <ul>
     <li><a href="/en-US/docs/Extensions" title="Extensions">Extensions</a></li>
    </ul>
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<p> </p>