pdfMachine merge is a fairly simple piece of software that aims to help you with sending large numbers of emails with personalized PDF attachments using Word, PowerPoint, Excel and even HTML files as the base merging templates.Its basic principle is quite easy to understand, as it helps you personalize each email with its own distinct information. This makes it ideal for users who need to send batch emails to their subscribers and, for example, need to input their names in each one.