Welcome to the Community, mahill2.
I can certainly understand how an ability to change the email address invoice reminders are sent from in your mobile app could be useful and have submitted a suggestion about it as of today.
You can also submit your own feature requests while signed in through a web browser.
Here's how:
- In the left navigation bar, go to Invoices.
- Click an invoice's Pencil () icon.
- Use your Feedback option.
- Enter any feature requests/feedback in the What did you think? text box.
- If necessary, you can attach an image file.
- Hit Next.
- Enter your email address.
- Select Done.

Your feedback's definitely valuable to Intuit. It will be reviewed by our Product Development team and considered in future updates. You can stay up-to-date with the latest news about your product by reviewing Intuit's Product Updates webpage.
I'll be here to help if there's any additional questions. Have an awesome day!