This looks great. I didn't try it with a custom document, but the demo document worked very well and it doesn't seem like it would be too difficult to use with

This looks great. I didn't try it with a custom document, but the demo document worked very well and it doesn't seem like it would be too difficult to use with other documents. One minor grievance: when converting, the client polls to see if the pdf was converted and shows a loading bar for every poll request which made it seem like things were broken. Things that I liked: - Only one slightly annoying request to sign up at the end, but the opt-out was clear and redirects back to the landing page. - The signing log is included with the completed document in the email. Services like Docusign make you log in order to view the completed document and I don't think they provide any sort of log. - The actual signing process is simple. I didn't try saving my signature or anything like that, but there's an import option which looks like it would be very easy to use with Preview's signature output.