Why many of my recurring invoices are shown status “Not Sent” under Invoice tab when it’s setup to be sending emails automatically.

It's nice to see you here today, @kevin-parvin. I've got the steps to fix the incorrect statuses of your recurring invoices. 

The recurring templates may have been damaged. That's why their statuses appear as "Not Sent" under the Invoices tab. 

To help fix this, I'd suggest deleting and re-creating them. This way, the system will automatically send them to your customers' emails. I'll guide you how. 

1. Go to the Gear (Settings) icon at the upper right. 
2. Select Recurring Transactions under Lists. 
3. Locate the recurring invoice. 
4. Choose Delete in the Edit drop-down from the Action column. 
5. Click Yes to confirm. 
6. Repeat the process for other templates. 

The screenshot below shows you the third to fifth steps. 

Once done, please re-create the recurring invoices and make sure to check the Automatically send emails option. You'll be able to see the "Sent" status under the Invoices tab. 

As always, you can go back to the Recurring Transactions list. From there, you can efficiently manage your recurring invoices, such as editing them. 

Additionally, you can run the Recurring Template List from the Reports menu. This lets you view all your scheduled, reminder, and unscheduled recurring templates in the software. Just enter the report name in the Search box as seen in the screenshot below. 

I'll be right here to help if you need further assistance. Have a great rest of your day, @kevin-parvin.