You could just shut off the notification in the admin panel.Admin panel -> Settings -> Tickets -> Autoresponder uncheck New Message options.and Admin panel -> Settings -> Tickets -> Alerts and Noticesuncheck New Message AlertsAlthernative you could create a special department that replies are not send for.  Transfer it to that department and then reply.Admin panel -> Agents -> Departments -> your department.New Message tick Disable for this DepartmentIf you don't want to do it either of those two ways then you would have to edit the core sources files.See /include/staff/ticket-view.inc.php circa line 572.

Ours is already unchecked, but the notification emails still go out to the customer via email.

ostresp.JPG

Looking at those again none of those check marks indicate a "send new message" to the user based on Agent activity.  I guess that it can't be disabled that way.

I believe I have found the post that I originally followed some time back, but the image is gone.http://forum.osticket.com/d/discussion//option-to-disable-end-user-emails-how-to-not-send-emails-externaly

For anyone else also wanting this option see below for the change.<br>&lt;?php<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; # XXX: Add user-to-name and user-to-email HTML ID#s<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $to =sprintf('%s &amp;lt;%s&amp;gt;',<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Format:($ticket-&gt;getName()),<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $ticket-&gt;getReplyToEmail());<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; $emailReply = (!isset($info) || $info);<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; $emailReply = "";&nbsp;&nbsp; <span style="background-color: rgb(255, 255, 0);">/* &lt;-Add this line to the left, below the line above */</span><br>Admin, please feel free to make this as solved. Thank you.

a year later

There are other alert settings that could be disabled if you don't want to send alerts to users
/scp/settings.php?t=tickets#alerts

mohankarunasiri
Does not make any sense to disable post reply, if you don't want your users to be notified of the changes or action you do, then use the Internal notes option.

    4 years later

    mohankarunasiri
    This is fairly old but I was looking for the same solution. For v1.15.2, I edited /include/staff/ticket-view.inc.php and changed:
    Lines 973-978 - Shifted the order of the array to be 'none', 'all', 'user'
    Line 981 - Changed 'all' to 'none'

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