Currently, the option to save invoices without an email address in QuickBooks Self-Employed is unavailable. However, you can enter a dummy email address to keep the copy in your account. While this feature is not yet available, I will send a product suggestion on your behalf to our Development Team.
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To add a label to an email address, add a plus sign (+) between the account name and the "at" sign (@), followed by a text label. For example, if you already verified sender@example.com , you can use sender+myLabel@example.com as the "From" or "Return-Path" address for your emails.
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