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<p dir="auto">On 6 Mar 2024, at 13:54, Michael Nietzold wrote:</p>
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<p dir="auto">There are 61k are in a Submailbox where I have condition: X-Envelope-To -> exists<br>
= araound 85%</p>
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<p dir="auto">I'm guessing you might have been associated with a mail server that adds this header to your mail. In my experience it's rare: I have <code style="margin: 0; padding: 0 0.4em; border-radius: 3px; background-color: #F7F7F7;">X-Envelope-To</code> in only 174 out of 128,636 messages (0.13%).</p>
<p dir="auto">Q</p>
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