Hello nickthedogtrainer, thanks for reaching out to the Quickbooks Community page, to change the email address used for sending receipts, go to the cog wheel> receipts>change receipts. You should be able to change it there, If you have any issues please reach back out to us and we will be happy to look into it more for you.
You have clicked a link to a site outside of the QuickBooks or ProFile Communities. By clicking "Continue", you will leave the community and be taken to that site instead.