> For the complete documentation index, see [llms.txt](https://docs.kbgfuzion.com/erp/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.kbgfuzion.com/erp/knowledge-base/sales-sell/invoice-external-url.md).

# Invoice external URL

1. With invoice external URL you can share the invoice to a customer via a link.
2. With this link, they can see & print the invoice without having to log into the system.
3. The link can also be sent in Email & SMS notification.
4. To send a URL in an Email/SMS notification add it to the notification template using the URL tag.