It would be helpful if libraries could choose to suppress sending borrowing overdue notices to patrons on days when the library and/or ILL office is closed. We do not check for ILL returns on Saturdays or Sundays, and on Monday morning we backdate everything returned over the weekend to Friday. However, patrons are regularly annoyed/alarmed to receive an overdue notice on Saturday or Sunday when they've already returned the item. We do indicate that this is nothing to worry about in our email template, but not everyone reads the entire email, unfortunately.