When I right click on my organization name and select Create Task there is no option to use the Exchange Mailbox Content and Attachments Template.
Exchange Mailbox Content and Attachments gatherings can only be run at the server level. You will need one Exchange Mailbox Content and Attachments gathering created per server.
Within the Quest MessageStats Console
1. Expand Exchange Organizations
2. Expand Servers
3. Right click on one of your back end servers or mailbox severs, select Create Task and you will have the option to use the Exchange Mailbox Content and Attachments template.
NOTE: FOR EXCHANGE 2000, 2003, 2007 and 2010 ENVIRONMENTS: