Based on the subject lines of the following Mazda emails, I seem to receive a number of reminders by email for various reasons:
approaching due date for payment
the scheduled one-time payment for you
a friendly reminder: the payment that is due is
Your funds have been deposited.
It does remind you to fasten your seatbelt, haha (albeit I would prefer it if it was sent via email so I can mark it as spam).
These days, I prefer to stay with email for any kind of notifications or updates rather than text. Getting a message shoved in your face (if it were truly time-sensitive or vital) is wonderful and all, but it's too repetitive. Companies should only send a text message reminding customers that they have till the final possible day to make a payment in order to avoid late fees.
You'll get a dozen reminders from doctors' offices, even if you've already confirmed; UPS wants to text you every time your shipment moves three feet across the nation, etc. A red message indicating a payment was needed appeared in my app, presumably from AMEX. It was merely a standard reminder, according to the representative I spoke with; I am never late, have great credit, and was not late with it. They treat us like we're perpetually overdrawn, past due, or late because of these constant, obnoxious reminders. An endless procession. Regulators are probably to blame for some of it. /rant