What Is PEC?
PEC — short for Posta Elettronica Certificata (Certified Electronic Mail) — is a type of email system used in Italy that provides legal proof of sending and receiving messages. Unlike standard email, PEC generates time-stamped receipts that are recognized as legally valid documents under Italian and EU law.
Think of it as a digital equivalent of a registered letter with return receipt. When you send a message via PEC, you receive a receipt confirming the message was sent, and the recipient receives a delivery receipt upon opening it. These receipts are cryptographically signed and hold legal weight in administrative and judicial proceedings.
Why PEC Exists
Italy introduced PEC to modernize public administration and reduce reliance on paper-based registered mail. It enables citizens, businesses, and public bodies to exchange legally binding communications entirely electronically, cutting costs and improving speed.
PEC is deeply embedded in Italian regulatory frameworks. It is required for:
- All Italian companies registered in the Chamber of Commerce (Registro delle Imprese)
- Professionals enrolled in official registers (lawyers, accountants, engineers, etc.)
- Public administrations and government bodies
- Any individual or entity wishing to communicate formally with Italian public authorities
How PEC Works Technically
PEC is built on standard email protocols (SMTP, IMAP, POP3) but adds a layer of certified delivery managed by accredited providers. Here is the flow:
- Sender submits a message through their PEC client to their PEC provider's server.
- The provider issues an acceptance receipt — a signed message confirming they received the email for delivery.
- The message is delivered to the recipient's PEC provider, which places it in the recipient's inbox.
- A delivery receipt is generated and sent back to the original sender, confirming successful delivery.
All receipts are digitally signed by the provider and include timestamps, making them tamper-evident and legally admissible.
PEC vs. Standard Email: Key Differences
| Feature | Standard Email | PEC |
|---|---|---|
| Legal validity | No | Yes (Italy/EU law) |
| Delivery receipts | Optional, unreliable | Mandatory, signed |
| Sender authentication | Basic (can be spoofed) | Verified by provider |
| Cost | Free or low cost | Annual subscription |
| Required for business in Italy | No | Yes (for companies) |
How to Get a PEC Address
PEC mailboxes must be issued by providers accredited by AgID (Agenzia per l'Italia Digitale), the Italian government agency responsible for digital innovation. Major accredited providers include Aruba, Legalmail, Namirial, and InfoCert.
The registration process typically requires:
- Valid identification (Italian tax code / codice fiscale or company VAT number)
- Choosing a mailbox plan (storage capacity varies)
- Identity verification (online or in-person, depending on the provider)
PEC and eIDAS: The European Context
While PEC is Italy-specific, the broader European framework for certified electronic delivery is defined by the eIDAS Regulation (EU 910/2014), which establishes Registered Electronic Delivery Services (REDS) at the EU level. Italy's PEC system is being progressively aligned with eIDAS standards, enabling cross-border certified communications across EU member states.
Summary
PEC is an essential tool for anyone doing business in Italy. It replaces registered mail with a faster, cheaper, and legally equivalent digital alternative. If you operate a company or professional practice in Italy — or need to correspond with Italian public bodies — obtaining a PEC address is not optional, it is a legal requirement.