Sending an invoice, or estimate, by email is fast an easy with Nutcache.
When creating an invoice/estimate
Once you are done creating your invoice, click the Save and send button at the bottom of the page. You will be prompted to add secondary recipients (if required) and a message to the email.
When the invoice/estimate is already created
From the invoice editing screen, click the Send option from the invoice top menu. A confirmation will be displayed and the invoice status will change from Draft to Sent.
You can also send an invoice from the invoice list: simply locate the invoice you wish to send to your client and select "Send" under the actions menu at the far right of the grid. A confirmation message will appear to indicate that the invoice has been sent successfully, and the invoice status will change to Sent.