How can I change the email address from which invoices are sent to my customers?

To change your email address, firstly you would need to add a new user with the new email address. After the email verification is done, you can change primary email address through the following steps:

• Click the Gear icon on the top right corner of the page.
• Select Organization Profile.
• Scroll down to the Primary Contact field.
• Click Configure Emails.
• Select the email address under the specific user or click + Add Additional Contact.
• Click Save.