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How to change the email address used to send invoices in QuickBooks Online
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You can change the email address that appears on your invoices, but not the underlying system address that actually delivers them.Here's the distinction and how to update it.
To set a different email address for invoices (without changing your main company email):
This address will now show as the sender/contact email on invoices sent to customers, without affecting your main account email.
More detail: Customise invoices, estimates, and sales receipts in QuickBooks Online
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