Just got our acceptance email(s). Also, the Senator's office notified us before the passport status site updated. We got the Senator's office email before the official emails. But, we did not get the Approved email. We only got the Shipped emails with tracking information.
3/04/21: Mailed application by Priority mail; did not pay to expedite. Mailed from Charlotte, NC to Philadelphia, PA
3/07/21: Application received in Philadelphia, PA
3/24/21: Application Status shows up as "Processing" and Check cashed
4/19/21: Approved / Shipped Notification
x/xx/21: New passport received