From ServiceBridge you are now able to send and print preview invoices.
To send invoices go to your Invoices tab:
Select any number of Invoices and click "Send"
It will then ask you to confirm that you want to send these Invoices to the customers. To confirm, click "Send"
Once you send the Invoices, you will be notified by the check mark located in the Sent column
Another way to send a Invoices is from the specific Invoice.
Find the Invoice, open it, and click "Send":
After you click Send you will now be able to choose whether to Preview the Invoice or Send the email.