Home : File Types : P7S File

.P7S File Extension

File TypeDigitally Signed Email Message

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CategoryText Files
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Unknown

File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.

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.

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Programs that open P7S files
Windows
Microsoft Outlook 2016
Mozilla Thunderbird
PostBox
Mac
Apple Mail
Mozilla Thunderbird
PostBox
Linux
Mozilla Thunderbird
Updated 10/26/2016

.P7S Extension Information

This page contains information about the file extension P7S and its known file associations. Our goal is to help you understand what a *.p7s file is and how to open it.

The Digitally Signed Email Message file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and do not publish any information we have not verified.

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