when sending an estimate want to be able to send from differnet email addresses. How do I add email addresses for different users

The option to add multiple email addresses in the From section when sending an estimate is unavailable, Laura. I'll provide more details below.

You can only use the default email address in the From section, which is quickbooks@notification.intuit.com, or add one Gmail address. This is to protect your account and prevent security risks. Suspicious email can sometimes be a scheme to get your info.

Please refer to the screenshot for visual reference:


I recommend providing feedback to our product development team about adding a different email address in the From section when sending estimates. That way, they can study this feature and consider adding it to future product updates. See the steps below:
 

1. Go to the Gear icon.
2. Choose Feedback.
3. Type in your product suggestions, then click Next to submit feedback.

You can visit our QuickBooks Online Feature Requests website to track the status of your submitted feedback.
 

Furthermore, you can check out these articles for future reference in customizing and converting estimates to invoices:
 

• Customize invoices, estimates, and sales receipts in QuickBooks Online
• Create and send estimates in QuickBooks Online
   

We're ready to help with other queries about managing email addresses on your sales forms in QuickBooks or any other issues. Just post your inquiries here for quick responses.