P7M File Extension

P7M file icon
Digitally Encrypted Message
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What is P7M file?

Files in the P7M format are responsible for storing encrypted (or signed digitally) email messages. In such file, there are stored the content and the attachment.

Access to encrypted messages

P7M files have one main purpose – protection of information contained within a message against an unauthorised access of third persons. In order to read an encrypted email it is required to possess a private key, adequate to the public key of received message. Private key is always the same, so that the target recipient has an easy access to each new message.

Additional information:

  • P7M files are often used to send fragile, protected data within medicine, financial or business industries;
  • P7M files use the Secure/Multipurpose Internet Mail Extension standard (S/MIME) cyphering method;
  • messages encrypted in P7M files usually occur as smime.p7m

Such email messages provide only information within a header with an empty content field. Text of the encrypted message is contained within the encrypted attachment.

Programs that support P7M file

Windows Windows

We hope we helped you solve the problem with the P7M file. If you do not know where you can download the application from our list, click on the link (which is the name of the program) - you will find more information there on the location where to download the secure setup version of the required application.

What else may cause problems?

There can be more reasons which determine that you are not able to open the P7M file (apart from the lack of the proper application installed).

First - the P7M file may be incorrectly associated with the application installed to support it. In this case, you need to change this association by yourself. To do this, right-click on the P7M file that you want to edit, click "Open with" and then select the program from the list that you have installed. After this operation, the problems with opening the P7M file should be solved.

Second - the file you want to open can simply be damaged. Then, the best solution is to find a new version of given file, or download it again from the same source as before (maybe for some reason in the previous session the download of the P7M file has not been completed and it cannot be opened properly).

Do you want to help?

If you have additional information about the P7M file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on P7M file.

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