Are most banks sending out payment notices to loan customers set up on auto-payment?

For example, 10 days prior to the note a notice goes out telling them that on XX/11/XXXX $200 will be taken from checking account XXX.


I think we are safe to turn this off for fixed rate notes, but I'm nervous about our HELOC's, etc because the payment can change? Or are we okay from a REG E perspective (preauthorized transfers) because the customer still gets a bill for open-end credit?