For more context:

These get sent from Paypal ([email protected] is the actual seller).

They often request money around $400-500. Subject line will say "You've got a money request." for these.

Otherwise, the sender will often set up a store/seller name that masquerades as a real bill ("Billing Department", "Invoice", "Billing Desk", etc) often with random numbers and letters appended presumably to avoid existing detections. Subject line for these will be "Invoice from Billing Desk", etc.

They'll attach a Seller's Note stating you must call a number to stop the charge, which is the lure to social engineer you further.