File extension P7M is an extension used by p7mViewer to denote files or emails that been encrypted in compliance with the S/MIME standard.
P7M is an encoded and encrypted file type that can only be read by certain applications and complies with S/MIME standards. This file type helps prevent hacking of sensitive documents or emails.
The P7M file is only associated with the p7mViewer application.
S/MIME stands for Secure/Multipurpose Internet Mail Extensions. S/MIME allows for a consistent way to send and receive secure, encoded data and provides authentication, message integrity, privacy and data security for emails.
Almost all modern email clients have S/MIME functionality built into them. However, some web-mail based clients cannot read the encryption. This is where the program can come in handy.
There is a 30-day trial version of the software. After it expires, you must purchase it to continue using it.
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