The fake text message which appears to have been sent by the USPS below with a link to m5smx.info is a scam. The scam is being sent by online spammers and scammers. Therefore, recipients are asked not to click the link in the fake text messages, they should just delete them.
The Text Message from USPS Shipment Scam
From: 909-780-6962
final notification for your USPS package 4A27D4 from 08/16/2020. Click: m5smx.info/RXwPvRgat