You can email your invoices in batch. Let me guide you how.
- Go to Sales.
- Choose the Invoices tab.
- Mark the invoices that you want to send.
- Click the Batch actions drop-down, then Send invoices.
Feel free to also visit our page for more tips and related articles for your future tasks. Here's the link: Income and expenses.
That should let you send invoices to your multiple customers. If you have other questions and concerns, please let me know. I'll be around to help. Thank you and be safe.