Panorama’s channels system doesn’t support email attachments – it didn’t in Panorama 6 and still doesn’t in Panorama X. I’m not sure if it ever will or not.
For the past year or two I have been using a service called Mailgun to send emails from Panorama, including emails with attachments. This service has worked really, really well for us.
I have so many projects on my plate that there is no way that I can make this available at this time. However, for those of you that are willing to do a little bit of programming and network configuration, Mailgun uses a simple HTTP interface that is very well documented. It’s pretty easy to set up with Panorama’s url( functions, or with curl. Mailgun is free for up to 10,000 emails a month so it is a pretty unbeatable deal. The trickiest part was getting the network settings configured with DKIM and SPF records so that your email doesn’t bounce as spam, but that has nothing to do with Panorama. Mailgun does have good documentation for that, though.