Beware of any text you receive where a stranger appears polite and "nice". A new one is now making the rounds in Illinois where victims are receiving a link that includes many pleasantries, but it's sinister and will empty your bank account.
My dad worked for the United States Postal Service in Missouri for more than 30 years. I mention this because I take instructions from the postal service seriously. Know that the USPS is insisting that Missouri residents check their mailboxes right now.