Files with p7m file extension is related to Secure/Multipurpose Internet Mail Extensions format which is used for digital signature.

There is one other file type using
the P7M file extension!

empty icon.p7m - SecureSoft encrypted data

Detailed description

Software that open p7m file

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P7M file extension - S/MIME digital signature

What is p7m file? How to open p7m files?

File type specification:

Encoded and encrypted file type icon Encoded and encrypted file type

The p7m file extension is associated with Secure/Multipurpose Internet Mail Extensions, also known simple as S/MIME. S/MIME provides a consistent way to send and receive secure MIME data.

Based on the popular Internet MIME standard, S/MIME provides the following cryptographic security services for electronic messaging applications: authentication, message integrity and non-repudiation of origin (using digital signatures) and privacy and data security (using encryption).

Not all email programs are able to handle S/MIME signatures, and if they are unable to do so, an attachment called smime.p7s that may confuse some people.

MIME types:

Updated: May 24, 2022

The default software associated to open p7m file:

OpenLimit CC Sign picture or screenshot

OpenLimit SignCubes AG logoOpenLimit CC Sign  Microsoft Windows software

Company or developer:
OpenLimit SignCubes AG

OpenLimit CC Sign is utility used to generate certified or advanced electronic signatures.

Help how to open:

Signatures are usually imported to operating system or programs to verify the digital credentials of the user.

How to convert:

This particular file type is not meant to be converted to anything else.

Related links:

S/MIME Version 2 Message Specification

List of software applications associated to the .p7m file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open p7m file, edit p7m file, convert p7m file, view p7m file, play p7m file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting p7m files.

Software that open p7m file - S/MIME digital signature

Programs supporting the exension p7m on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about OpenLimit CC Sign for open p7m file action.

Microsoft Windows:

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