If you don't have a corporate/bulk account, they are still about half the price of competitors for overnight envelopes (as of some months ago, per my experience).
They have a program now where, if you have a P.O. Box, you can receive non-USPS packages at it (once you sign up, and using the address they provide you in the format they indicate). They don't have email notifications for these, yet -- they do for some other classes of mail. And sometimes at my post office, it can take a (partial) day for them to go from receiving the package to having the lockbox key or notification in your P.O. Box. However, when I looked at my local UPS Store for their comparable service, it's now gone from about double the USPS price a few years ago, to about quadrupal their price.
I also like supporting the USPS, where employees still have living wages and careers. Well, at least UPS is, last I knew, not all contractors like FedEx is. But I think their stores are franchises that handle their own employment.
(And the "USPS is going broke" rhetoric is driven by political manipulations designed to attack it, forcing it to book future expenses its competitors and other businesses don't, rather that current P/L and "normal" accounting. Not that they shouldn't look for new opportunities -- such as but not only this package handling -- when they are not hindered in same by same or similar external control; perhaps explaining the continued lack of email notification for non-USPS packages, for which there is a ready and minimally demanding physical solution already in place for triggering same for other types of mail that I noticed and confirmed with my local post office employee.)
Anyway, I don't have to worry about Amazon et al. packages sitting out on my front stoop, tempting thieves and the rain. Without breaking the bank. Also gives me a street address for some sidelines.