automated email subject field content

[Ella]

Hello,

I would like to know how to add tokens to the message body for an automated email which are from a different table than the single table linked to the button in the trigger. Is this possible? I have 2 linked tables: POs and line items. I need the automated email to contain a list or grid of the line items and info from the PO table about the supplier and the PO#. 

Or, is there some way to format the grid in the email so that it doesn't get scrunched up like this? I need the numbers to align with line items exactly.

Thanks in advance for any suggestions!