USPS Form 1583 Setup Guide
Complete Your Virtual Mailbox Registration
Thank you for choosing Whiskers Workspace!
To activate your Virtual Mailbox, the United States Postal Service (USPS) requires every customer to complete USPS Form 1583. This form authorizes Whiskers Workspace, as a Commercial Mail Receiving Agency (CMRA), to receive mail on your behalf.
Don’t worry, we’ve created this guide to walk you through the entire process.
Estimated Time to Complete: 15–30 minutes

Need Assistance?
Our team is happy to help. If you have any questions, simply contact us or visit our office for in-person assistance.
1. Signed USPS Form 1583
If you already have a completed and notarized USPS Form 1583 from another virtual mailbox provider, you may submit that form, provided the information is still current and meets USPS requirements.
If you do not already have a completed form, download USPS Form 1583 and complete all required fields. Do not sign the form until instructed by the online notary during your notarization appointment.
2. Two (2) Valid Government-Issued IDs
USPS requires two forms of identification.
Please ensure your IDs are:
- Valid and unexpired
- Clear and readable
- Submitted as color scans or photos (front and back)
3. A Computer or Smartphone
You’ll need access to a device with:
- Camera
- Microphone
- Internet connection
This is required if you’ll be completing your notarization online.

How to Get Your Form Notarized Online
Complete Your Online Notarization in Just a Few Steps!
Once you’ve completed USPS Form 1583, the next step is to have it notarized. We recommend using OneNotary, a secure online notarization service that allows you to complete the process from the comfort of your home.
Here’s How It Works:
Step 1 – Start Your Online Notarization
Click the button below to begin the notarization process through OneNotary.
Step 2 – Verify Your Identity
During your appointment, OneNotary will verify your identity using your government-issued identification documents.
Please have your IDs ready before your scheduled session.
Step 3 – Meet with a Licensed Online Notary
A licensed online notary will guide you through the process via a secure video call.
Important: Complete all required fields on USPS Form 1583 before your appointment. However, leave the signature section blank until the online notary instructs you to sign during your live video session.
Step 4 – Receive Your Notarized Form
After your appointment is complete, you’ll receive your notarized USPS Form 1583 electronically. In most cases, the document is available shortly after your notarization session.
Once received, download and save the completed document, then submit it to Whiskers Workspace along with your two (2) valid government-issued IDs to complete your Virtual Mailbox registration.
Need assistance? If you’re having trouble with the online notarization process, please contact us or visit our office. We’ll be happy to help guide you through the process.
Note: You’re welcome to use any licensed notary service to notarize your USPS Form 1583. We recommend OneNotary because it’s a convenient online option that allows you to complete the process remotely.
You’re Almost Done!
Submit Your Documents to Whiskers Workspace
Once you’ve completed the notarization process, please send us the following:
Required Documents
✔ Completed and notarized USPS Form 1583
✔ Two (2) valid government-issued IDs (front and back)
How to Submit
Simply reply to the onboarding email you received after purchasing your Virtual Mailbox and attach the required documents.
Or send them directly to: support@whiskersworkspace.com
Important: Please ensure all documents are clear, complete, and readable to help avoid delays in processing your application.
Need Help?
If you have questions at any point during the setup process, our team is happy to assist you.
If you’d prefer in-person assistance, you’re welcome to visit Whiskers Workspace during business hours.
Our team can help you:
✔ Review your USPS Form 1583
✔ Answer your questions
✔ Ensure you have all the required documents before submitting them
Office Address
4699 Central Ave Suite 200 St. Petersburg, FL 33713
Business Hours
Monday – Saturday
9:00 AM – 7:00 PM
Sunday
1:00 PM – 5:00 PM
Frequently Asked Questions
USPS requires all Commercial Mail Receiving Agencies (CMRAs) to obtain a completed USPS Form 1583 before they can legally receive mail on behalf of a customer.
Yes. You can complete USPS Form 1583, have it notarized online, and submit your documents electronically without visiting our office.
No. If you’re using an online notary, wait until the notary instructs you to sign during your live appointment.
If you already have a completed and notarized USPS Form 1583 from a previous virtual mailbox provider, you may submit it for review. Our team will verify whether it meets USPS requirements for your new mailbox registration.
If we notice any missing information or issues with your submission, we’ll contact you with instructions on what needs to be corrected before your mailbox can be activated.
Once we’ve received and approved all required documents, you’ll receive an email inviting you to create your iWorkspace account. After registration is complete, we’ll activate your mailbox and send you a confirmation email. Most applications are completed within 1–2 business days.
Absolutely! If you’d like assistance completing the process, you’re welcome to visit Whiskers Workspace during business hours. Our team will be happy to guide you through each step.