> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://docs.clientexec.com/sitemap.xml
> Use this file to discover available pages before exploring further.
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# How To Attach PDF When Mailing Invoices

If you want to ensure that PDF invoices as sent an attachment when sending invoice emails you need to go to **Settings **> **Billing **> **General**.

1. Scroll down to **Attach PDF When Mailing Invoice**.
2. Select **YES**.
3. The click **Update Settings**.

![](https://storage.crisp.chat/users/helpdesk/website/895a2775afb3f800/screenshot-2023-03-09-at-13-37_sk0doi.png)