Glad you like it!
 
 
 
Some suggestions:
 
1. You can embed (insert > object)  an object (pdf file for example)  directly into your Word template,  and then Merge/email with Word Doc as attachment.  The actual attachment can then be opened from within the word file attached to the email.
 
2. You can upload attachments to a web location and provide a download link in your email.
 
 
 
Am not aware of way to send attachments as part of Word merge (other than the merged .DOC file)...
 
 
Code:

Untested but you could try sending yourself the attachment,  
and copying the still encoded TEXT version of the attachment (eg. raw MIME),  
and adding that to the bottom of your Word template.