Open P7M File
P7M file extension is used to denote a digitally signed and encrypted E-Mail. Both the E-Mail message itself and any attachments are added to the P7M envelope, which can only be opened by clients with the appropriate key.
P7M files are an implementation of the Secure/Multipurpose Internet Mail Extension (S/MIME) standard which supports public key encryption. S/MIME provides essentially two cryptographic services which can be used by E-Mail applications. The first is digital signatures, which can be used to authenticate a message, check its integrity and prove its origin or source. The second is encryption, which is used to ensure that data remains both private and secure, even if an E-Mail is intercepted by a third-party.
As P7M files are encrypted, it is not possible open P7M file to extract the contents without the appropriate software and decryption key. E-Mail applications with S/MIME support can be configured to automatically retrieve the necessary key to decrypt received P7M files and display the resultant message as an ordinary E-Mail. However, clients without support, such as web-based E-Mail services, will simply show the encrypted P7M E-Mail as an attachment.
Encryption is utilised by P7M files to ensure data privacy even if the E-Mail was accidentally sent to the wrong address or was intercepted during transmission. However, this has the disadvantage that anti-virus software is unable to detect malware, as it will not be able to decrypt the E-Mail once it has been created. Therefore, any attachments received in a P7M file should be checked prior to opening, even if they are from a known and trusted source.
You can open P7M files in any E-Mail client that supports S/MIME provided that the necessary public key is available. You can open P7M files using other applications such as Cryptigo p7mViewer, which is designed specifically for opening signed and encrypted E-Mails.
Rate this page: 4/5 based on 29 ratings
Populating this website with information and maintaining it is an ongoing process. We always welcome feedback and questions that can be submitted by visiting Contact Us page. However since there are many users visiting this website and because our team is quite small we may not be able to follow up personally on every request. Thank you for your understanding.
For more general information about how to open P7M files, file extension p7m and registry you can read one of the following articles:
- Windows registry - Windows registry is included in modern Windows operating systems to replace the older INI files which also contained system configuration. Let's concentrate on the structure and purpose of Windows System Registry, review some possible attacks to it and ways to avoid them...
- Folders, files and paths - Files are the entries or information stored on your computer. These are represented by binary coding and written on the tracks on a disk. Files are often represented by distinct icons, a normal practice done by Microsoft with their products including system files for their series of operating systems...
- What are file extensions? - File extensions are unnoticed yet are very crucial parts of the computer world. But many are still unaware of the basic foundation and principles behind the remarkable wonders of computers...