MERGE PDF FILES AND PROTECT PDF FILE WITH SINGLE OR MULTIPLE PASSWORDS AND AUTOMATIC SEND EMAIL. 

Download This application from below link
shinepdf.com
Complete PDF solution application.
You can convert PDF to excel, pdf to word, pdf to html, pdf to text and vice versa, you can merge multiple pdf into single pdf as well
Protect more than 2000 individual PDF files with different password, combinations like PAN card with DOB in DDMMYYYY format or default password as per your
requirements automatically , in just one click....
You can send PDF files to Individual user via email automatically.
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