What Is USPS Form 1583 and Why Do I Need to Have It Notarized?
The United States Postal Service (USPS) Form 1583 is a mandatory authorization form required by the USPS for all customers using a Commercial Mail Receiving Agency (CMRA), such as PostScan Mail.
What Does Form 1583 Do?
- Authorizes PostScan Mail to receive mail on your behalf
- Allows us to open, scan, forward, or securely handle your mail
- Ensures that only authorized individuals or businesses have access to mail addressed to them
Important:
- This form does not change your USPS mailing address
- It does not tell us where to forward your mail — forwarding is set up separately in your PostScan Mail account
Why Does It Need to Be Notarized?
- USPS regulations require that Form 1583 be notarized to verify your identity
- The notary seal ensures that you are the rightful person authorizing PostScan Mail to act on your behalf
Download USPS Form 1583
You can access the form directly here: 
Download USPS Form 1583
The information you provide is used only to complete USPS Form 1583 in compliance with federal mail-handling regulations.
Need Help?
- Phone: 1 (800) 624-5866
- Email: support@postscanmail.com