how to alter $post[message] in email notification

[Budget101]

Currently when email notification is sent to MODS, they receive the full content of the post. I would like to know if it is possible to only allow them to receive 2-3 lines (rather than the full post!) of info so they have to visit the forum to read the rest.

$bbuserinfo[username] has just posted in the $foruminfo[title_clean] forum of $vboptions[bbtitle] under the title of $threadinfo[prefix_plain]$threadinfo[title].

This thread is located at $vboptions[bburl]/showthread.php?t=$threadinfo[threadid]

Here is the message that has just been posted:
***************
$post[message]
***************

[Marco van Herwaarden]

Shortening to 2-3 lines would require coding. You could remove it completly by removing $post[message] from the phrase.

[Budget101]

I know how to remove it, I would like to know the proper change in code to Alter it