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<p dir="auto">On 13 May 2019, at 17:40, leo wrote:</p>
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<div style="white-space:normal"><blockquote style="border-left:2px solid #777; color:#777; margin:0 0 5px; padding-left:5px"><p dir="auto">Works pretty well. Didn’t know that there is such a custom MailMate thing like the Thread-Id.</p>
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<p dir="auto">Alternative solution relying on real headers only (if I understood the question correctly):</p>
<p dir="auto">First make a smart mailbox matching root messages, for example,</p>
<pre style="background-color:#F7F7F7; border-radius:5px 5px 5px 5px; margin-left:15px; margin-right:15px; max-width:90vw; overflow-x:auto; padding:5px" bgcolor="#F7F7F7"><code style="background-color:#F7F7F7; border-radius:3px; margin:0; padding:0" bgcolor="#F7F7F7">In-Reply-To does not exist
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<p dir="auto">Then make another mailbox based on the above which has this condition:</p>
<pre style="background-color:#F7F7F7; border-radius:5px 5px 5px 5px; margin-left:15px; margin-right:15px; max-width:90vw; overflow-x:auto; padding:5px" bgcolor="#F7F7F7"><code style="background-color:#F7F7F7; border-radius:3px; margin:0; padding:0" bgcolor="#F7F7F7">In-Reply-To is in [Mailbox Above] Message-ID
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<p dir="auto">-- <br>
Benny<br>
<a href="https://freron.com/become_a_mailmate_patron/" style="color:#3983C4">https://freron.com/become_a_mailmate_patron/</a></p>
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