File Extension Library

.P7M File Extension

  • Category: Misc Files
  • Format: Binary

What is an .P7M file?

.P7M file extension has been classified as Misc Files. The format of .P7M file is Binary

.P7M is Digitally Encrypted Message

A P7M file is an encrypted email message that contains the contents and attachments of a sensitive email. It is used to prevent unauthorized users from accessing information in an email and may require a private key that matches the message's public key in order to open the document. P7M files are typically used for protecting confidential medical, financial, and business information.

P7M files are typically seen as smime.p7m files. These files include the contents and attachments of an email and have been secured with Secure/Multipurpose Internet Mail Extensions (S/MIME), which is a public key encryption standard of MIME data.

Most P7M files, including smime.p7m files, can be opened using Cryptigo p7mViewer.

List of all softwares that can open the Digitally Encrypted Message
Cryptigo p7mViewer
Apple Keychain Access

How to Open .P7M file on different platforms

Open .P7M File on Windows

  • Right-click a .P7M
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .P7M file and Select check box "Always use this app to open .P7M files" Press "Ok"

Open .P7M File on Mac

  • Right-click (or Ctrl + Left-click) the .P7M file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .P7M File on Linux

Right click on the .P7M file, choose "Open with" and select a program from the list above

Open .P7M File on iPhone

Select a file. If you don't see an application to open the .P7M file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .P7M File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .P7M files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .P7M files

  1. You need to update the application that you normally use to open .P7M files. Only the latest version of the software supports the current .P7M file format
  2. You need to check the .P7M file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)