How do I send the same invoice to multiple recipients?

There are two ways. The simplest: when sending the invoice, put extra addresses in the To, CC, or BCC fields directly — up to three addresses per field, separated by commas.

For recurring patterns, set them on the customer's profile. A customer can have multiple email addresses stored — all of them are pre-filled into the To field when you send. If you always want a copy to land somewhere (accountant, second office), use the Send a copy to field on your email template — it adds a permanent BCC for every invoice sent with that template.

For the full sending flow — to/cc/bcc, attachments, custom subject and message — see Sending invoices and estimates by email.