At the bottom of this page there is a section under “Hack Email Format” that reads:
Subject line
If [n] is present anywhere in the subject line of your email, the e-mail will be filed under the category numbered n. Otherwise, it will be posted under whichever category is selected for “Usual Category” in Step 1. Example: [1] This is a Test! would be posted as “This is a Test!”, filed under General.
However, I can’t get it to work. I’m wondering if there are any other modifications that need to be done to the wp-mail.php file to get this to work.
Has anyone heard anything?