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


    Pacific Immigration
    VAT: VS123456789
    CIF: BL1247890


    7707 West Lane Dr., #D 2 Stockton, CA 95210

    Get in Touch

    (209) 438-2222

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