When and How to Contact USCIS Lockbox

When to contact a USCIS Lockbox

• To learn more about the reasons USCIS deemed your application ineligible.
• If more than 30 business days have passed after you mailed your application and USCIS hasn’t processed your credit card payment or deposited your filing fee check or money order.
• Your filing fee has been handled by USCIS, but more than 30 days have elapsed without you getting a receipt notice.

If you already have a receipt number, don’t contact a USCIS lockbox. Rather, submit an inquiry on the USCIS Tools and Resources page or call the USCIS Contact Center at 1-800-375-5283

How to contact a USCIS Lockbox

Please send your application via email to lockboxsupport@uscis.dhs.gov, including:

• Form number (for example, Form I-485)
• Receipt number
• Sponsor or applicant’s name
• Address of the applicant or sponsor
• Delivery confirmation (if you need to find a parcel)
• How you made your payment and what evidence that USCIS received it