Four background jobs run on the server to power proposal automation: (1) mark proposals past due — sets Past Due on unpaid/partially-paid proposals whose due date (plus any net terms) has passed, and triggers auto-charge or sends the past-due email; (2) send proposals email reminders — on the day that matches each proposal's own reminder-days setting before its due date, emails a payment reminder, and marks a proposal Fully Paid if it turns out the balance is already covered; (3) send recurring proposals — generates and sends the next copies for active recurring schedules; (4) send proposals messaging notification — emails staff about unread proposal messages. In the current version these are typically scheduled daily (the messaging one more frequently), but the exact schedule lives in server cron configuration, not in the app, so if reminders or recurring proposals stop arriving, ask Sprwt support to confirm these jobs are still running.