I found this document about customizing email content but it doesn't describe attachment:

http://confluence.atlassian.com/display/JIRA042/Customising+Email+Content

Please advise me.

Hi Jamie, JW23,

We are also interested in sending attachments in email notifications - for example when some files are attached via "Attach files"/"Attach screenshots" we would like them to be also attached to the email notification on this event. Is it possible?

We checked the link provided by Jamie, but it seems to send notification as a post-function for some workflow step, not for "Attach files"/"Attach screenshots"..

Thanks in advance,