What is a .P7S file?
P7S is the digital signature attached to a signed S/MIME email.
- Did you know
- A P7S signature proves an email really came from the claimed sender.
- A P7S holds a detached PKCS#7 SignedData object, kept separate from the message it vouches for.
- Mail clients attach the signature as smime.p7s inside a multipart/signed S/MIME message.
- What Analyser reads
- Identify and read more email, calendar and contact files: Outlook for Mac archives (.olm) and templates (.oft), S/MIME .p7m/.p7s, Mozilla Mork stores (.msf/.mab), Eudora/Outlook Express mailboxes (.mbx/.toc), phone backups (.vmg SMS, .vnt notes), XML/JSON iCalendar and vCard (.xcal/.jcal/.xcard/.jcard), LDIF (.ldi) and legacy address books (.pab/.wab/.abbu).
- Depth of analysis
- .P7S is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .P7S file
- Drag a .P7S file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.