One file in the browser. Nothing to install.

How to open p7m file

This page opens one attachment you already saved. It does not log into Aruba, Poste, or any mailbox.

Drop the attachment you already saved

The file saved from the mail, not the message. One attachment, up to 100 MB. We do not ask for the mailbox password.

.p7m.pdf.p7m.xml.p7m.p7s.m7m.pm7Max 100 MB

Processed in this browser. The file is not uploaded.

Preview does not ask you to sign in. The file is not uploaded. The first download of the inner file is the only free one. After that, Pro or Lifetime.

The message and the file are not the same thing

PEC is Italian certified email. The message stays in the mailbox. People who ask how to open p7m file after that delivery already have the mail and need the saved file.

The mail app cannot read the attachment it lists.
Aruba, Poste, and Legalmail are not the same screen.
Dropping the whole message does not extract the document.

Message and attachment

Text, receipts, and other files stay in the mailbox. Save one envelope and drop it. Three attachments are three opens.

The provider stays the provider

Aruba and Poste keep the account. People also type aruba p7m viewer or p7m reader aruba, and both mean the saved file. We do not take over their webmail.

How to open p7m file you saved

Save the attachment first, and then you open p7m file online in this browser. How to open p7m file still begins in the mailbox you already use.

1
Download only the attachment
Download only the attachment, not the whole message. Save it from Mail or Outlook so the name ends in .p7m, .m7m, .p7s, or .pm7.
2
Open that file in the browser
Drop the saved file here. A signed PDF stays that PDF. For an invoice, the download is the original XML, not a new PDF.
3
Leave the PEC where it is
We do not delete or move the message. Closing this tab leaves the mailbox as it was.

One blank envelope beside a laptop on a wooden desk, with no address written on the paper. — That one envelope is the attachment you saved, not the mailbox.

Which mailbox sent the attachment

We do not replace their webmail. Once the file is saved, how to open p7m file does not depend on the logo on the login page.

Aruba PEC

Save the Aruba attachment and bring it here. We do not connect to Aruba. A search for p7m viewer aruba means that saved file, not their site.

Poste

A saved Poste file follows the same path. A search for p7m viewer poste does not open a Poste session. We read only your copy.

Legalmail

Drop a .p7m saved from Legalmail. We do not read the InfoCert mailbox or repeat their checks.

Other PEC providers

Who has a file from certified mail

Someone who needs the document today, without installing a desktop program for one attachment.

A secretariat or a studio

In a secretariat or a studio, someone saves the attachment from the shared mailbox and opens it in the browser without giving us the password.

Someone using Mail or Outlook

If you looked up how to open p7m file in outlook, save the attachment from Outlook first, then drop that file here. This page does not open Outlook.

Someone who saved it from a phone

You opened the mailbox on a phone and then saved the file. Drop that file here. The photo shows several envelopes, but the tool still opens one.

Three blank envelopes in a row beside a laptop on a wooden table, with no printed address. — Several saved attachments can wait. The tool still opens one file.

What this page will not do

Reading the file is local. It is not a login, and it is not a verdict on the signature.

No mailbox password

There is no PEC password field. A site that asks for the mailbox password, so it can open attachments, is not this page.

No signature check of the attachment

Reading the PDF or the invoice does not check the signature. A name in the file is text, not a judgment.

Dike is not required to read it

You do not install Dike to read the file in the browser. Use that program on the original file only if you want its check.

This page, webmail, and a mail app

Only this page reads the saved attachment. Webmail and a mail app still own the message.

	This page	Webmail	A mail app
Needs the mailbox password?	No	Yes	Yes
Reads the message body?	No, only the saved attachment	Yes	Yes
Checks the signature?	No	No	No
Uploads the file to us?	No	No	No

What you get from the attachment

The inner file is what the envelope held. The mailbox brand does not change it.

Signed PDF

Preview and the later download are that PDF. We do not pass it through another format.

Invoice XML

You see the fields that are present, and the download is the original XML. We do not make a new PDF from those fields.

Some other inner file

Any other inner file is downloaded as extracted, not turned into a spreadsheet or a text document.

One attachment at a time

Three attachments are three opens. We do not zip them. The drop zone takes one file, up to 100 MB.

Files you can drop after saving

After the save, the extension and the contents decide. A file from Aruba and a file from Poste follow the same rule.

Accepted here

A saved .p7m, .pdf.p7m, or .xml.p7m
.m7m, .p7s, and .pm7
Files saved from Aruba, Poste, or Legalmail
Inner PDF as that PDF
Invoice XML as the original XML

Not accepted here

The whole message without a saved file
A .enc file
A ZIP of many attachments
The mailbox password
A signature traffic light

A phone face-down, a closed laptop, and a glass of water on a table. — You may have saved the file from the phone. Open that file here, not the mailbox.

Before you drop the file

Confirm you saved the attachment, open one file, and note any others. On a Mac it is the same envelope.

Confirm you saved the file

A dropped .eml of the message is refused. The name has to be the envelope you saved from the mailbox.

Open one attachment and note the others

Repeat the drop when there is another attachment. The gift is one download per account, not one per file.

On a Mac it is the same envelope

A Mac does not change the envelope. You do not need Dike just to read that same saved file.

What this page does

These rules are the same on this page as on the rest of the site. Preview stays free. Download does not, after the one gift.

The file is not uploaded
The envelope opens in the browser, on the computer of the person who drops it. We do not send it and we do not keep it. Close the tab and the document leaves the page.
The signature is not checked
We do not look up AgID certificates, we do not ask whether a certificate was revoked, and we do not show a green, yellow, or red light. A signer name, if one is present, is text read from the envelope, not a judgment on the signature.
One file at a time
One .p7m, .m7m, .p7s, or .pm7, up to 100 MB. We do not build a ZIP of many documents and we do not empty a whole folder.
Preview is free, download needs an account
Looking at the contents does not ask for an account. Downloading the inner file does: the first download is one gift per account. Then Pro is €2.99 a month or €12.99 a year, and Lifetime is €24.99 once.
A PDF that was already inside, or the original XML
If a PDF is inside, preview and download are that PDF. If an invoice XML is inside, we show the fields and the download is the original XML. We do not draw a new PDF.

Other ways to open a file

Questions

Questions about the saved attachment

How to open p7m file that came as a mail attachment?

Save the attachment from webmail or your mail app, then drop it here. The message text and the other files do not open. One drop reads one envelope, and the mailbox stays with the provider.

Does this work with Aruba PEC?

Yes. You open the saved file. We do not enter Aruba. How to open p7m file from that mailbox is the downloaded copy, not a login on their site, and the message stays there.

And with Poste?

Yes, with the file saved from Poste. We do not enter that mailbox. How to open p7m file after delivery is a drop of that attachment. Poste still holds the message.

Is Legalmail included the same way?

Yes, if the file is already on your computer. We are not Legalmail, we do not read the InfoCert mailbox, and we do not repeat their checks. Drop that one saved file here.

Do I give you the PEC password?

No. There is no mailbox login here and no field for the PEC password. It stays on the provider site, where you download the attachment. We never ask for an Aruba, Poste, or other mailbox password.

Do I install Dike for the attachment?

No, if you only need to read it. The browser shows the PDF or the invoice fields without Dike. We do not install Dike or run its signature check. Use that program on the original file for its own check.

Is the attachment uploaded?

No. It stays in the browser on your computer. We do not send it to an archive or link it to the mailbox. Closing the tab drops it from the page’s memory.

What if the attachment is an invoice XML?

You see the invoice fields the XML contains, and the download is the original XML. We do not build a new PDF from those fields. Number, parties, tax, and totals show when present.

What if it is a signed PDF?

Preview shows that PDF. The download, after you sign in, is the same PDF that was in the envelope. We do not draw it again or change its pages. Screen and download are that one PDF.

Do you check the attachment signature?

No. Opening the attachment is not a signature check. There is no certificate result and no green or red light. A signer name, if the file has one, is only text, not a judgment.

Can I open every attachment together?

No. One attachment at a time. We do not zip the folder, and we do not download the message for you. Note the other names and open each saved file on its own.

Does preview ask for an account?

No. Preview does not ask for an account. The download does. The first download is one gift after login, then Pro is €2.99 a month or €12.99 a year, and Lifetime is €24.99 once.

Does a .enc file from the mailbox open?

No. We accept .p7m, .m7m, .p7s, and .pm7. A .enc file is refused even when certified mail carried it. The mailbox password will not make a .enc file readable here at all.

Does the message stay at Aruba or Poste?

Yes. The message stays at Aruba or Poste. We do not delete or move it, and we never see the mailbox. We use only your downloaded copy, so signing out here changes nothing in their webmail.

Open this file in the browser

Drop one file. Read the preview without an account. Download the inner document only when you need it, with the gift or with Pro or Lifetime.