Open M7M files in your browser
Italy's way of keeping a signed P7M with the timestamp that dates it, in one file. See both and open what's inside, right here. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your signed file opens as who signed it and when, each check listed, then the file inside.
- Who signed • Checked against the roots Filepeek carries
- When • Its timestamp and the authority behind it
- The file inside opens in its own viewer
- Every check listed • Nothing asked of a CA
About M7M
An M7M is a small MIME message, like an email with two attachments: a P7M signed file and the timestamp a time stamping authority issued for it. Italian signing apps save one when they stamp a signed file, as contract.pdf.m7m or invoice.xml.m7m.
The timestamp proves the signature existed at that moment, so it still counts after the signer's certificate expires. Its authority signs it with a certificate of its own, often a qualified one.
Filepeek checks the signature and the timestamp against the roots it carries, Italy's qualified ones among them, and that the timestamp is for this very signature. Then the file inside opens in its own viewer, and a FatturaPA invoice is laid out as an invoice.
Signed file with its timestamp
.m7m
Format
- MIME type
- multipart/mixed
- Made by
- InfoCert
Inside the file
- Holds
- A P7M and its timestamp
- Proves
- Who signed, and when
- Standard
- MIME, CMS and RFC 3161
- Used in
- Italy
Opens in every browser
Browsers download M7M files, and few apps open them. Filepeek checks the signature and its timestamp and opens the file inside in Chrome, Edge, Firefox and Safari.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Questions
How do I open an M7M file?
Drop it on this page or press Peek an M7M. You see who signed it and when it was stamped, and the file inside opens in its own viewer.
What's the difference between M7M, TSD and P7M?
A P7M is the signed file alone. An M7M and a TSD each keep it with its timestamp: an M7M as a MIME message, a TSD in the standard form RFC 5544 sets out.
Does the signature still count after the certificate expires?
That's what the timestamp is for. Filepeek checks the signer's certificate at the timestamp's time, so a signature stamped while its certificate was valid still holds.
Is my file uploaded?
No. The file opens inside your browser and never leaves your device.