After the sponsor has submitted the I-129F application for alien fiance with USCIS a text message is sent followed by an NOA1 receipt by mail
Receiving You’re I-797C NOA1
Once the sponsor has mailed in the I-129F Petition for Alien Fiancee Application.They will receive either an email or text message notification from USCIS?
Example of what yours might look like:
Subject: USCIS Acceptance Confirmation
Your case has been accepted and routed to the USCIS California Service Center for processing.
Within 7-10 days by standard mail, you will receive your official Receipt Notice (Form I-797) with your Receipt Number WAC179000000.
With the official Receipt Notice (Form I-797) you may visit www.uscis.gov where you can check the status of your case using My Case Status.
We suggest you wait until you have received your Form I-797 before checking My Case Status.
This confirmation provides notification of the date USCIS received your case. This notice does NOT grant any immigration status or benefit.
You MAY NOT present this notice as evidence that you have been granted any immigration status or benefit.
Further, this notice does NOT constitute evidence that your case remains pending with USCIS. The current status of your case must be verified with USCIS.
PLEASE DO NOT REPLY TO THIS MESSAGE
If you have a mobile number and it was added to your I-129F Petition then USCIS would also send you a text message and here is what it should look like?
About 7 to 10 days later the Post Office will deliver the NOA1