Files with p7s extension can be typically found as certificates in PKCS #7 Signature file format which is used to provide a consistent way to send and receive secure MIME data.

Detailed description

Software that open p7s file

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P7S file extension - PKCS #7 signature

What is p7s file? How to open p7s files?

File type specification:

Encoded and encrypted file type icon Encoded and encrypted file type

File extension p7s is associated with the S/MIME (Secure/Multipurpose Internet Mail Extensions) that is used to provide 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).

MIME types used:

The default software associated to open p7s file:

Microsoft Outlook icon

Microsoft Corporation logoMicrosoft Outlook  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Outlook is e-mail management tool and personal information manager distributed with Microsoft Office suite. Outlook integrates e-mail application, calendar, task manager, contact manager, note taking in to one application.

Microsoft Outlook is used as a stand-alone application and also can work with Microsoft Exchange Server and SharePoint Server.

The predecessor of Outlook was called Schedule+. The newest version is called Outlook 2016.

Apple Mail icon

Apple, Inc. logoApple Mail  Apple macOS / Mac OS X software

Company or developer:
Apple, Inc.

Apple Mail is e-mail client distributed with Apple Mac OS X operating system. Apple Mail supports POP3, SMTP, IMAP mail protocols as well as Microsoft Exchange.

Help how to open:

You can import these certificates to your system to authenticate yourself.

How to convert:

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

Find conversions from p7s file:

p7s to pdf

Find converter to p7s file type:

pdf to p7s

Related links:

S/MIME Version 2 Message Specification

List of recommended software applications associated to the .p7s 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 p7s file, edit p7s file, convert p7s file, view p7s file, play p7s file etc. (if exist software for corresponding action in's database).

Unspecified and all other actions for computer programs working with p7s file - PKCS #7 signature

Click on the software link(s) for more information. Suggested software applications use p7s file type for internal purposes and/or also by different way than common edit or open p7s file actions.

Microsoft Windows:

Main software associated with p7s file by default:
Microsoft Outlook small icon Microsoft Outlook
Other suggested software:
Mozilla Thunderbird small icon Mozilla Thunderbird

Apple macOS / Mac OS X:

Main software associated with p7s file by default:
Apple Mail small icon Apple Mail
Other suggested software:
Mozilla Thunderbird for Mac small icon Mozilla Thunderbird for Mac

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