Receiving an undelivered item notice can cause anxiety, especially when the origin indicated is CMP Milano Borromeo. This acronym, which stands for Centro di Meccanizzazione Postale (Postal Mechanization Center), identifies one of Poste Italiane’s main logistics hubs, located in Peschiera Borromeo. Understanding the role of this center and, above all, learning to decipher the codes on the notice is the first step to guessing the nature of the communication and the sender, even before going to the post office for pickup.
The undelivered item notice, the classic white slip left by the mail carrier, contains valuable information. Among this, the barcode and its associated numerical sequence are fundamental. The first few digits of this code are not random but follow a logic that allows the shipment to be classified. With this guide, you can navigate the most common codes and face the wait for pickup with greater peace of mind, distinguishing between a simple commercial communication and a more important document.
What is CMP Milano Borromeo and What is its Function
The Postal Mechanization Center in Peschiera Borromeo is a high-tech facility where Poste Italiane manages the automated sorting of enormous volumes of mail and packages. The wording “CMP Milano Borromeo” on the notice does not indicate the original sender of the communication, but rather the operational center that processed the shipment before its final delivery. These centers, strategically distributed throughout the country, represent the beating heart of postal logistics, optimizing service times and efficiency.
Its function is purely logistical: letters and packages from various senders (companies, public entities, private individuals) converge here to be sorted and directed to their destination post offices. Therefore, receiving a notification from this CMP simply means that your registered mail or package has passed through one of Italy’s most important postal hubs. Understanding this mechanism is essential to avoid confusing the sorting center with the actual sender of the letter.
Deciphering the Codes on the Collection Notice: A Practical Guide
The key element to understanding the nature of a registered mail item on hold is the unique code printed on the notice. The first two or three digits of this code are a reliable indicator of the type of communication. Although they do not offer absolute certainty, they allow you to make very concrete assumptions about the sender. For example, registered mail from a public entity will have a different code than one sent by a bank or a lawyer. This coding system is a useful tool for the recipient, who can thus prepare for the letter’s content.
Analyzing these initial digits is like reading a clue. It allows you to distinguish, with a good degree of accuracy, between routine communications and documents that require more attention. In the next chapter, we will examine in detail the most frequent codes associated with shipments handled by the CMP, providing a real map to guide you. For a general overview of the codes, you can consult our guide to identifying the sender.
Codes Related to Legal Documents and Fines
When the initial digits of the code are 75, 76, 77, 78, or 79, it is very likely that the registered mail contains a legal document or a fine. These codes are often associated with notifications from courts, lawyers, or police authorities for traffic violations. Derived codes such as 786, 787, and 788 also fall into this category, indicating formal communications such as summonses, seizures, or other legal notices. It is important to pay close attention to these notifications, as failure to collect them does not stop their legal effects.
Codes Related to Communications from the Italian Revenue Agency
Several codes can signal a communication from the Agenzia delle Entrate (Italian Revenue Agency) or the Agenzia delle Entrate-Riscossione (formerly Equitalia). The codes 613, 615, and 573 are often used for notifications regarding unpaid taxes, tax assessment notices, or other tax-related communications. The codes 670, 671, 689 and, in some cases, 695 and 696, are more specifically linked to tax bills. Receiving a notice with one of these codes, like the registered mail code 696, suggests the need to check your tax status.
Other Common Codes and Their Possible Senders
Besides legal and tax documents, there are numerous other codes. The code 618, for example, is quite generic and can indicate communications from banks, financial companies, insurance companies, or even your employer. It could be the delivery of a new credit card, a payment reminder for a bill, or corporate communications. Codes beginning with 612 and 614 are also often traceable to credit institutions or Poste Italiane itself. Finally, codes like 665 can be associated with payment reminders or the delivery of new cards, as explained in our guide to code 665.
Managing the Undelivered Item: Pickup, Authorization, and Deadlines
Once you receive the undelivered item notice, the registered mail will be available for pickup at the indicated post office for a period of 30 days. For legal documents, the holding period extends to 6 months, but the notification is considered legally completed for the sender after just 10 days. It is crucial to respect these deadlines, as after they expire, the communication is returned to the sender marked as “compiuta giacenza” (completed holding period), and it will still produce its legal effects.
If you are unable to go in person, you can authorize another person to pick it up. To do this, you must fill out the designated space on the collection notice itself or use a separate authorization form. The authorized person must present themselves at the counter with their own ID, a copy of the authorizer’s ID, and the signed collection notice. This option provides flexibility, allowing you to avoid missing important communications even when you are away.
In Brief (TL;DR)
A complete guide to deciphering the most common codes on collection notices from CMP Milano Borromeo and identifying the sender of the registered mail.
In this guide, we analyze the most common codes to help you identify the sender, whether it’s the Italian Revenue Agency, INPS, a fine, or a legal document.
Thanks to this guide, you can decipher the codes on the notice and get a clear idea of the sender before pickup.
Conclusion

The indication “CMP Milano Borromeo” on a collection notice should not be a cause for concern, as it simply refers to the postal sorting center that handled the shipment. The key to anticipating the content of a registered mail item lies in the numerical codes printed on the notice. Learning to recognize them allows you to distinguish between urgent communications, such as legal or tax documents, and notices of a commercial or private nature. Knowing the most common codes, like those identifying the Italian Revenue Agency or fines, provides citizens with a tool for awareness and preparation. Finally, we must remember the importance of always picking up registered mail on hold, either personally or through an authorized person, to avoid the legal consequences of a completed holding period.
Frequently Asked Questions

What does the acronym CMP Milano Borromeo on the collection notice mean?
The acronym CMP stands for Centro di Meccanizzazione Postale (Postal Mechanization Center). “CMP Milano Borromeo” indicates that your registered mail was sorted at the Poste Italiane logistics center located in Peschiera Borromeo, in the province of Milan. It is not the original sender of the letter, but the postal hub that processed the shipment before sending it to the post office for final delivery.
How can I figure out the sender of a registered mail item from CMP Milano Borromeo?
To get an idea of the sender, you need to check the first two or three digits of the numerical code on the collection notice. For example, codes beginning with 75, 76, 77, 78, or 79 usually indicate legal documents or fines. Codes like 613, 615, 670, or 689 are often associated with communications from the Italian Revenue Agency or tax bills.
What are the most common codes for legal documents and fines?
The most common codes that identify legal documents, fines, or citations are those beginning with the digits 75, 76, 77, 78, 79, and their derivatives like 781, 782, 783, 786, 787, 788. Code 668 can also indicate communications of a legal nature, such as investigation notices or court summonses. If you find one of these codes on the notice, it is advisable to pick up the communication promptly.
What happens if I don’t pick up a registered mail item from the CMP?
If you do not pick up a registered mail item within 30 days (or 6 months for legal documents), it is returned to the sender with a notice of “compiuta giacenza” (completed holding period). This means that, by law, the communication is still considered delivered and produces all its legal effects, even if you have never seen it. Therefore, ignoring a collection notice is never a solution.
Can I authorize someone to pick up the registered mail?
Yes, you can authorize another person to pick it up. You can fill out the authorization section on the collection notice or use a standard authorization form. The authorized person will need to go to the post office with the notice, their own valid ID, and a photocopy of the registered mail recipient’s (the authorizer’s) ID.
Frequently Asked Questions
The acronym CMP stands for Centro di Meccanizzazione Postale (Postal Mechanization Center). The CMP in Milano Borromeo, located in Peschiera Borromeo, is one of Poste Italiane’s main sorting centers. Its mention on the notice does not identify the sender, but only the logistics hub where your mail was processed before delivery. This center handles millions of items every day, including regular mail, packages, and registered mail.
Yes, you can get an idea of the sender by analyzing the barcode on the collection notice. The first 2-3 digits of the code are an important clue. For example, codes beginning with 75, 76, 77, 78, 79 often indicate fines or legal documents. Codes 670, 671, or 689 are frequently associated with bills from the Agenzia delle Entrate-Riscossione (Italian Revenue Agency – Collection). Codes like 618 or 628 may refer to communications from banks, insurance companies, or utility providers.
The codes most frequently associated with legal documents, fines, or communications from the Italian Revenue Agency are those beginning with the digits 78 (like 786, 787, 788) and 68 (like 689). Codes 613 and 615 can also indicate notifications of fines or unpaid taxes. Code 668 is often linked to administrative and legal communications, such as investigation notices or summonses.
You must go to the post office indicated on the notice to pick up the mail. Generally, you have 30 days to pick up a standard registered mail item. For legal documents, the holding period is longer (up to 6 months), but the notification is considered legally completed 10 days after being deposited (“compiuta giacenza”). It is crucial to pick up the communication, because even if you fail to do so, it will still produce its legal effects.
No, not necessarily. Although the CMP in Peschiera Borromeo handles a large volume of legal and tax documents, it also sorts communications of a different nature. For example, codes like 12, 13, 14, or 15 indicate a simple registered letter, sent by a private individual, a company, or a professional. Similarly, codes like 617 or 649 may contain documents such as new credit or debit cards.




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