I don't see a way inside of an incident ticket to reply with a solution.  Many of our solutions have attachments so the attachment would need to be part of the reply.

I also looked at creating a reply template with the attachment as another option and can't add files to reply templates either.

I know solutions is for users to access but the majority of our users send in an email and do not log in so it would be very helpful for our one person help desk to reply either with a solution and it's attachment if any or to select an already created reply template with the attachment.