The TIM and Register.it PEC mailboxes also deliver signed attachments in .p7m format. The procedure to open them is simple and the same for both: save the attachment and open it with a dedicated tool.
Save the attachment from the TIM PEC
From the webmail or from the PEC TIM app:
1. Access your TIM PEC mailbox.
2. Open the message with the .p7m attachment.
3. Download/save the attachment to your device.
Save the attachment from the Register.it PEC
From the PEC Register.it webmail:
1. Access the Register.it PEC account from your browser.
2. Open the message with the .p7m attachment.
3. Download the attachment with Save / Download.
Open the .p7m file
Once the attachment has been saved, from TIM or Register.it:
1. Open the Open .p7m tool of P7M Viewer.
2. Upload the .p7m file.
3. View or download the original document.
If it is an electronic invoice, you see it in readable form; if it's a signed PDF, you get the clean PDF.
Frequently asked questions
Does the procedure change between TIM and Register.it? No: in both cases you save the attachment and open it with P7M Viewer.
Can I open it from my phone? Yes, from my browser or with the free P7M Viewer app for Android.
Is it free? Yes, opening a single file is free.
In summary
To open a .p7m file from the TIM or Register.it PEC, save the attachment and upload it to P7M Viewer: read the signed document in a few seconds, for free and without installing anything.
