Hello Worx26,

The only thing you can change is the Customer-facing email in your settings. That will be the one to receive replies when your customers will respond to the invoices or transactions they received.

1. Click the Settings icon at the top and select Account and Settings.
2. Choose Company and click the Pencil icon on the Contact Info section.
3. Update the Customer email field.
4. Click Save, then Done.

Let me know if you have other questions in mind.