Send PM as...

So I'm working on modifying a bulk PM plugin to suit my needs, and I'm wondering if there's any way to set the sending username, for example to 'System'. I've tried hooking into pm_before_send and setting $pm_message['from_username'] and $_POST['from'] already, to no avail.

If anyone could point me in the right direction, that would be appreciated.

If I'm not totally mistaken it will always be the display_name of the sending user.
So if you want to change that, then create a user "System" and set its user_id as the sender (can't promise that either as its not expected to send a PM under a different user).

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Thomas Seifert