How do I change the outgoing email message?

I can help you customize your email messages, Star91335. 

There are several ways on how you can change your email messages being used for sales forms and purchase orders.

I'll show you how: 

1. Log in to QuickBooks Online.
2. Click the Gear icon at the upper-right corner and select Account and Settings. 
3. From the Sales left menu, click the Message section. 
4. What you enter in this field will be the default email messages sent together with your forms. 
5. Click Save and then Done. 

For the email messages on your purchase orders, you can click Expenses from the left menu. Click the Messages menu, enter the default message and then Save and Done.

You can also use our Customize form styles feature that allows you to enter different email messages you might want to use for different sales forms. For the detailed steps on how to turn and set it up, you can use this reference: Customize invoices, estimates, and sales receipts in QuickBooks Online.

Let me know if you have other questions. I'm around the corner to help. You take care!