How can I change the email address in Zoho Books from which invoices are sent to my clients?
You can change your Zoho Books mail address by following these steps,
Click on Gear icon on the top right corner and select Organization Profile.
Click on Configure Emails next to Primary Contact. Click on the pencil icon to edit and specify a different email address for the primary contact and save changes.
If you have multiple email addresses for an organization, please select Mark as Primary against the email ID of your choice.
Verify this process by opening the confirmation mail sent to the mail address you’ve specified.
You can now choose to send invoices to your clients via this email address as well by selecting it from the drop-down.