I am looking for a service or a software that allow to prepare and send reports to customers. This is not about simple mailing software because the unique PDF file should be attached to each email.
For instance, I have a database with a list of customers and I need to send a monthly report to all of them or to any group with detailed information about this customer. The report should be prepared for each customer but has the same template.
Something like Mailing in MS Word but more complicated.