How do I determine if this is spam?

Normally, I would immediately delete this as spam – but I’m anxiously awaiting my passport renewal, so I’m getting paranoid. I checked the status of my renewal, and it got mailed in the right time frame.

I got a text from avinashpughg6lie@gmail.com (first red flag) that says “The USPS package arrived at the warehouse but could not be delivered due to incomplete address information. Please confirm your address in the link. https://usps.posthelpan.com (second red flag) Please reply Y, then exit the test message and open it again to activate the link or copy the link and open it in your Safari browser.”

The person at the post office stared blankly and shrugged when I ask them. How can I check on this without clicking on a suspicious link?