pdfMachine merge allows you to easily send a batch of emails with personalized email bodies and personalized PDF attachments.
Using the pdfMachine merge "sign_here" feature, you can now request each email recipient to electronically sign a PDF file and be automatically emailed the signed document.
The email recipient needs no extra software, just an internet browser on a desktop unit, tablet or smart phone.
For details on how to do this: pdfMachine merge / pdfMachine sign here