Bonsai sends automated reminders for your unpaid invoices.
Automated Invoice Reminder Schedule:
1 Week Before Due
1 Day Before Due
1 Week Overdue
>2 Weeks Overdue
The reminders are enabled by default, but you can always disable the reminders from your project's settings.
You can always see the recent reminders that have been sent on your behalf by looking at your timeline on your dashboard or on the project details.