How do you add a statement message to all statements

Thank you for reaching out to the Community, @Foxfire18.

The option to add a statement message to all statements in QuickBooks Online (QBO) is currently unavailable. As a workaround, you can add your message in the email body section.

For now, I recommend sending feedback. Your feedback will help us improve your QBO experience and will be shared with our Product Development Team.

Here's how:

1. At the upper right corner, click the Gear icon.
2. Under the Profile, select Feedback.
3. Enter your comments or product suggestions.
4. Then, select Next to submit a feedback.

For more details about the feedback process, you can check this article: Submit Feedback.

I will also include a helpful article that gives you a great at-a-glance of the status of sales transactions, open invoices, and paid invoices: View Sales transactions in QuickBooks Online. 

Thank you for your patience and understanding as we work to improve your experience with QuickBooks Online. If there's anything else that I can help you with, please do not hesitate to reach out.