Home : File Types : P7S File

.P7S File Extension

File TypeDigitally Signed Email Message

3.2 (132 Votes)
CategoryText Files

What is a P7S file?

A P7S file is an email message that includes a digital signature. It can be used for sending secure emails that can only be viewed by the intended recipient. P7S files verify that the email is from who it claims to be from and that the email has not been modified in transit.

More Information

Most email applications, such as Microsoft Outlook, Apple Mail, and Mozilla Thunderbird, support digital signatures. However, if an email program does not handle digital signatures, a P7S file may appear as an attachment (smime.p7s) to the email message.

NOTE: Email programs that use P7S files use PKCS (Public-Key Cryptography Standard) #7 to sign email messages.

Open over 300 file formats with File Viewer Plus.

Programs that open P7S files

Free Trial
Updated 10/26/2016

About P7S Files

Our goal is to help you understand what a file with a *.p7s suffix is and how to open it.

The Digitally Signed Email Message file type, file format description, and Mac, Windows, and Linux programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

If you would like to suggest any additions or updates to this page, please let us know.