Why do I need to fill out a USPS Form 1583 (Application for Delivery of Mail Through Agent)?
- Mike Spinelli
- Jan 19
- 2 min read
Updated: Feb 27

Need help filling out or notarizing your PS 1583 Form online? Contact me!
If you’re planning to use a Commercial Mail Receiving Agency (CMRA), such as a virtual mailbox service or PO Box alternative, this form is a necessary part of the process.
Filling out USPS Form 1583 helps to verify your identity. The primary purpose of Form 1583 is to verify your identity. You’ll need to provide two forms of identification, such as a driver’s license, passport, or utility bill, to confirm that you are who you claim to be. This verification step helps prevent fraudulent or anonymous use of mail services, protecting both you and the postal system.
Completing USPS Form 1583 authorizes the CMRA to collect your mail. By completing and signing the form, you legally authorize the CMRA to receive and handle your USPS mail and packages on your behalf. Without this authorization, the CMRA cannot legally manage your mail. This requirement ensures transparency and accountability in the handling of your correspondence.
Signing USPS Form 1583 increases security and helps stop fraud. Form 1583 enhances overall mail security. By requiring verification and authorization, the USPS helps prevent misuse of its services, ensuring that only legitimate individuals and businesses can utilize CMRAs to receive mail.
In short, filling out USPS Form 1583 is a small but important step that protects your identity, your mail, and the integrity of the postal system. If you’re setting up a virtual mailbox or CMRA account, completing this form ensures your mail service is secure, legal, and tailored to your needs.
Need help filling out or notarizing your PS 1583 Form online? Contact me!
DISCLAIMER - The information provided on this website is for general informational purposes only and should not be considered legal advice.