It's great to see you today, @info580.
This time, there isn't a way to change the sender email to your domain using the iOS app. The program send sales forms using the email “QuickBooks@notification.intuit.com.” This ensures you're updated on the status of the sent transaction. For more information, check out this article: Email and Customise Sales Form.
With this, I’ll make sure to take note of your suggestion and pass it along to our engineers. They might consider it it to improve the flow in sending sales forms through the mobile app.
Since it's winter season, I'd recommend visiting this website: QuickBooks Product Updates. This link covers all our innovations that are inspired by customer feedback. You can click the On the go section so you can see the new releases for QuickBooks Online (QBO) mobile app.
Please know that I'm just a post away if you have other concerns. Take care always, @info580.
