Example of automated video email?

All,
I have the RPi Cam Web up and working and now moving onto tidying up the install. I installed, configured and verified that ssmtp and mpack are able to send emails/attachments from pi@raspberrypi prompt. 

I need a second set of eyes or someone to verify this is the proper approach:


1. nano /var/www/macros/end_vid.sh

2. add:
#!/bin/bash

list=( $1*.th.jpg )

thumb="${list[-1]}"

mpack -s subject /var/www/media/thumb mail.address@example.com

[save and exit nano]

3. sudo chmod a+x /var/www/macros/end_vid.sh

4. sudo chown www-data:www-data /var/www/macros/end_vid.sh

Does this look correct? is there a more elegant way or method that I overlooked?

Guidance and help are appreciated!
Brian