Many people share .p7m files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .p7m file can be edited, converted or printed with. On this page, we try to provide assistance for handling .p7m files.
P7mViewer 4.5 is a standalone application designed to view files and e-mail messages encrypted and/or signed in compliance with S/MIME standard.: General features: Displays content of smime.p7m and other files with file extension p7m. ' (Windows 10) or 'Windows cannot open this file' (Windows 7) or a similar Mac/iPhone/Android alert. If you cannot open your P7M file correctly, try to right-click or long-press the file. If you cannot open your P7M file correctly, try to right-click or long-press the file.
1 filename extension(s) found in our database.
- Displays content of smime.p7m files and other files with file extension p7m: Reads signed and encrypted messages: Diagnoses undecrypted messages: Accepts Microsoft Outlook® messages: Fully functional 30 days trial license: Detailed online help system.
- P7mViewer Download p7mViewer 4.5 displays the contents of smime.p7m files and other files encrypted or signed in the S/MIME standard. It gives easy access to encrypted or signed email messages in web-based mail.
.p7m - PKCS #7 Encrypted Message
The P7M data files are related to p7mViewer. P7M file is a PKCS #7 Encrypted Message. The P7M encrypted e-mail messages have a null body with an attachment smime.p7m. This attachment probably contains the encrypted message.
- Application:
- p7mViewer
- Category:
- Data files
- Mime-type:
- application/pkcs7-mime
- Magic:
- - / -
- Aliases:
- -
- PKCS #7 Encrypted Message related extensions:
- .upt
- Connectivity Memory Model Update Timing File
- .sep
- SimEnhancer Profile
- .wbc
- Webshots Image Collection
- .ram
- RiTE Ascii Model
- .pcb
- SmartCAM Custom Control Panel File
- .my3d
- Hasbro My3D File
Naturally, other applications may also use the .p7m file extension. Even harmful programs can create .p7m files. Be especially cautious with .p7m files coming from an unknown source!
Can't open a .p7m file?
When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:
Windows can't open this file:
example.p7m
To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.
To avoid this error, you need to set the file association correctly.
- Open Control Panel > Control Panel Home > Default Programs > Set Associations.
- Select a file type in the list and click Change Program.
The .p7m file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:
p7, pim, pm, pm7, pum, pym
Is it possible that the filename extension is misspelled?
Similar file extensions in our database:
- .pm
- Perl Module
- .pm
- PM Bitmap Image
- .p7
- XV Visual Schnauzer Bitmap
- .pym
- Python Macro File
- .pim
- Avid Pro Tools Plugin Map
- .pm7
- Pegasus Mail Folder State
Operating systems
DataTypes.net currently supports the following operating systems:
Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android
If you find the information on this page useful, please feel free to link to this page.
P7mviewer Windows 10 64-bit
If you have useful information about the .p7m file format, then write to us!
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P7mviewer Windows 10 Versions
The digitally signed files using P7S or P7M format has the mime-type application/pkcs7-signed-data type. Details about the standard regarding the creation of such structures are published on RFC 3369, standard initiated by RSA Security Data Inc.
P7S Viewer lets you view files signed by P7S Signer or other signature software.
P7S Viewer Requirements:
– Microsoft .NET Framework 4.0 available here
– Windows XP or later (including Windows 10)
Licensing:
The license for P7S Viewer is a lifetime license. There is no additional cost like monthly / annual fees or fees per use. When a new version is released you can continue using your purchased version as usual.
Windows 10 Update
30 Day Money Back Guarantee – If you are not pleased with our software for any reason, you are entitled to our 30 day no hassle, no questions asked, money back guarantee.
Product | Price (€) | Buy with PayPal | Buy with credit card | |
P7S Viewer | 29 EUR | |||
Technical Support | The technical support is free for 12 months after purchase |
If you like to pay by Bank Wire Transfer, please fill this form.
P7m Viewer Windows 10 Pro

P7mviewer Windows 10 Iso
Download P7S Viewer
(latest version: 7.4)
P7mviewer Windows 10 Screenshot
Useful links:
