I use OSTicket for document storage for project/repair/customer documents (signing agreements and contracts, attaching photos of fubar mobos, etc... I have a similar thought about how to attach these documents in canned responses and use filters to trigger sending them.But I've also been looking into a better way than paper and scanning/attaching and found this open source digital document signing software that is self-hosted (java tomcat/PSQL) that brags on having many of the same features as DocuSign but free.From a cursory examination of the demo and reading the docs and watching some of their YouTube vids it brags that it has an API that could be used to pass information back to the ticket in a response so there is a copy readily available in the work ticket. https://open.esignforms.com/From your initial response i'm not quite sure exactly what you are asking for, but hopefully, that gives you some more ideas too.