RPost’s SecuRmail service employs AES 256-bit encryption to convert select email into a more private encrypted format. The recipient must have an up-to-date PDF reader to view the encrypted message and any attachments received with that message.
To view attached files embedded in the encrypted PDF file, one must use Adobe Reader 7.0 (circa 2004) or equivalent PDF from another manufacturer. The latest free Adobe Reader is located at: http://get.adobe.com/reader/
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