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<p dir="auto">Jolin,</p>
<p dir="auto">What version are you using? On my version - 2.0 Beta (6272) as noted, while I rarely use the Change Subject menu (MM Menu>Commands>Change Subject), there are specific caveats expressed in a pop-up when using it regarding the replacement of the item on the server and other caveats to pay attention to when using this command.</p>
<p dir="auto">One of them may affect your use and be the cause of a MM crash if your server is uncooperative, I suspect.</p>
<p dir="auto">In my case however, adding a “ 2” to your message’s subject line (on the list) worked fine for me after a brief pause for server synch.</p>
<p dir="auto">It is attached below. It was changed only on my IMAP server, BTW, and not in the MailMate forum server so your sender doesn’t see it, most likely.</p>
<hr>
<p dir="auto">My system details follow. Hope this process is of some help to you in troubleshooting:</p>
<ul>
<li>Confirm the issue is affected by version updates.</li>
<li>Compare the specific issue with different OS versions if possible (related to the external causes).</li>
<li>Log in with a different user to see if replication occurs on the same hardware (related to the external causes).</li>
<li>Save your current settings. Then try clean install of same version of MM.</li>
<li>Try updating the version to the latest. Then, re-import your settings.</li>
</ul>
<hr>
<p dir="auto">My system: MailMate/6272/8E0C2B09-5E7C-51C0-A74E-30C066DF8C4A 15.5.0/arm64/Mac16,5/14</p>
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<div class="markdown" style="white-space: normal;"><p dir="auto"><br>
On 29 Jul 2025, at 7:30, Jolin Warren wrote:</p>
<blockquote style="margin: 0 0 5px; padding-left: 5px; border-left: 2px solid #5855D5; color: #5855D5;">
<p dir="auto">I occasionally use the ‘Change Subject’ command in MailMate to clean up an email’s subject or add one if it’s blank. I find it very useful. However, on some messages it causes MailMate to crash and fails to change the subject. It seems to happen when a message has an attachment but I’m not sure if this is the trigger; in the past I haven’t systematically noted whether or not a message that caused a crash had an attachment or not. Is anyone else experiencing this or is it a quirk of my particular setup?</p>
<p dir="auto">--<br>
=> Jolin</p>
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