Does USCIS send email/text notification even when they reject?

Does USCIS send email/text notification even when they reject I-485 application? Or only when they accept? It has been 3+ weeks. I hear that one should wait 30 days, then call up USCIS.
 
No, USCSI does not send text/email notifications for rejected packages, they simply get sent back upon rejection.

The Lockboxes are dealing with a rather large backlog at the moment, it hasn’t been unusual for a filer to wait up to 8 weeks before getting an acceptance notification or NOA in the past couple of months as a matter of fact. So your wait period is not out of the ordinary in terms of what is being reported of late.
 
thanks @Sm1smom that's super helpful. So they send email/text on acceptance at least, right? I did file G1145 for enotification.
Also, does it help to call USCIS and ask for status? And if so, without any receipt number, how will they even track the application (SSN, Passport??)
 
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