Yes. You can share an invoice which you had created from your Zoho Books account. All you have to do is generate a link for that invoice using the Share Invoice Link option and share it. The receiver of this invoice does not need to have a Zoho Books account. He can use the link to view and/or pay for the invoice.
To generate this link:
Note: Only invoices with a Sent status can be shared.
Simplify accounting and