Official letters in Italy can carry deadlines, and a missed one is hard to undo. This guide explains how addresses are written, why the name on your mailbox matters, what a registered-mail notice looks like and what PEC is.
An address usually runs: street name and number, then any building details, then the postal code and city, followed by the province in brackets. A typical pattern looks like this:
If you are in a large building, include the staircase and apartment number. Without them, mail may not reach you.
Italian postal workers deliver by the name on the mailbox and the doorbell. If your name is missing, mail may go back to the sender. Ask your landlord how to add your name, and use the exact spelling that appears on your documents.
If a registered letter or parcel cannot be delivered, you may find a notice in your mailbox (an avviso di giacenza). It tells you where to collect the item and for how long it is kept. Bring the notice and your passport or other ID. If someone else collects for you, ask the post office what authorisation they need (usually a written delega and copies of both IDs).
Do not ignore these notices. Some are routine, and some come from public offices. Photograph the notice on the day you find it and note the deadline printed on it.
PEC (posta elettronica certificata) is a certified email service that gives the sender proof of sending and receipt. Public offices, companies and professionals use it, and some procedures require it. You may be asked for a PEC address, or asked to send something by PEC. Ask the office whether a normal email is enough or whether you need a PEC address, and how to get one.
Your address matters for your residenza registration and for many other offices. See how to register residency and the first 30 days.
General information only, not legal, tax or immigration advice. Procedures vary by city and individual situation, so confirm with the relevant office. See the full disclaimer.
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Updated October 2026. See the full checklist · All guides