Below please find the steps to include the hyperlink within an invoice when emailing an invoice from Time and Billing:
Open Time & Billing and select the relevant client to invoice
Go to Input, click Invoice (WIP). The Prepare an Invoice for [client] screen opens
Complete the various tabs as required.
Note: In the Invoice Summary screen, select the Email Invoice box, and it should populate the client's email address, then click Save.
4. Select the Post + Email tab.
5. The screen with the Invoice Number and Invoice date opens. Click OK.
6. In the Email as PDF Document screen, select the Include hyperlinks box.
Note: It's important to include the full address of the linked site
7. Click Generate to attach the invoice to an email.

