.P7S

📌 .P7S formatted file items can be encountered in email correspondence that contains an S/MIME digital signature. The .P7S file objects serve for indicating the message has been protected, encoded and can be read and opened only by the intended mail recipient. Basically, the .P7S data elements verify that the relevant email is sent from who it claims to be author of the message and that the email has not been adjusted or altered in transit prior to being opened. A majority of the global email toolkits and bundles, such as Mozilla Thunderbird, Apple Mail, and Microsoft Outlook, are compatible with a digital signature file feature. Nevertheless, if an email service does not sustain, process, and operate with digital signature entries, a .P7S file instance can be appended as an inclusive attachment (smime.p7s) to a genuine, source digitally signed email note. Indeed, the email toolsets and bundles that make service of .P7S data extension composition utilize PKCS (Public-Key Cryptography Standard) #7 encryption algorithm in order to properly sign email file messages.

How to open an .P7S file?

📌 The .P7S file hierarchy and make-up can be fluently and successfully opened, extracted, and decoded by Microsoft Outlook (or its cloud web-service subscription analogue Outlook 365), Mozilla Thunderbird, Apple Mail, or PostBox utilities, currently supported and enhanced product initiatives, designated for processing e-mail correspondence and messages via a formerly preinstalled desktop client, compatible with all contemporary desktop architectures and infrastructures.