<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" type="topic" id="mail-recognized-thread-related-headers"> <info> <desc>Which thread-related headers are recognized by Evolution.</desc> <link type="guide" xref="index#common-mail-problems" /> <revision pkgversion="2.28.3" version="0.1" date="2010-10-16" status="review"/> <credit type="author"> <name its:translate="no">April Gonzales</name> <email its:translate="no">loonycookie@gmail.com</email> </credit> <license> <p>Creative Commons Share Alike 3.0</p> </license> </info> <title>Thread related headers recognized by Evolution</title> <p>Evolution supports the following headers:</p> <list> <item><p>References</p></item> <item><p>In-Reply-To</p></item> </list> <p><gui>Thread-*</gui> headers are Microsoft's proprietary headers and not supported.</p> </page>