In general, a USCIS cover letter should contain the following elements: USCIS address. Date of filing. Subject line that identifies the relevant benefit. Greeting. Short introductory paragraph describing the purpose of the letter. List of the documents in your package that support your request for the immigration benefit.
Mark the envelope and the cover letter with the type of submission. For example, Original Submission, Application to Register Permanent Residence or Adjust Status (Form I-485).
Yes it's beneficial to upload whatever evidence you gather as you go. We uploaded probably 5-6 additional times as we gathered evidence. The more the better and less likely you will get RFE for more evidence.
Generally, USCIS Mailrooms are equipped to receive boxes / packages and it would generally be a good idea to use one of the flat rate USPS boxes which has similar size to an a USPS flat rate envelope and to send all the documents and copies of attached documents in one box / package to USCIS.
You may send your forms through USPS, FedEx, DHL, or UPS. We encourage you to save a copy of your payment, along with any tracking number provided by the courier, for your records and so you can verify the status of its delivery.
The receipt number is a unique 13-character identifier that USCIS provides for each application or petition it receives. The agency uses it to identify and track its cases. The receipt number consists of three letters-for example, EAC, WAC, LIN, SRC, NBC, MSC or IOE-and 10 numbers.
USPS provides reliable and affordable international delivery to about 180 countries through Priority Mail International. Most Priority Mail International shipments include tracking and insurance: up to $100 for nonnegotiable documents and up to $200 for merchandise.
Follow these simple steps to check your case status with your USCIS receipt number: Visit the USCIS Case Status Page. Go to the Check Your Case Status page on USCIS. Enter your USCIS receipt number. Type the 13-character receipt number into the provided box (without dashes). Review Your Case Status.
You may send your forms through USPS, FedEx, DHL, or UPS. We encourage you to save a copy of your payment, along with any tracking number provided by the courier, for your records and so you can verify the status of its delivery.