Moon Invoice allows users to mark Invoices, Estimates, and Purchase Orders with statuses such as Sent, Paid, Due, and Draft. Each status is assigned a predefined color code, which is automatically selected by the system and cannot be changed manually.

Make sure that few options are enabled from the settings. 

1. Go to settings >> click on ‘App Settings’ >> Invoice/estimate => Print & Email => Enable ‘Mark as sent on Print’ and ‘ Mark as sent on email’
2. Go to settings >> PDF & Print settings >> click on Header >> enable or disable the Status watermark option accordingly. 

Invoice: 

Go to Invoice >> click on three dots at the right corner >> users can mark it as Sent, void or Paid. 

Proforma Invoice:

Go to Proforma Invoice >> Click on the three dots at the right corner >> click on mark as >> users can select Draft, Invoiced, sent, canceled.

Estimate & Purchase Order: 

Go to Proforma Invoice >> Click on the three dots at the right corner >> click on mark as >>users can select draft, sent, approved, Invoiced, on hold, disputed, declined, or canceled. 

                                                                                                                                 -Moon Invoice