To send an invoice by email, simply click on > Invoices in the sidebar, then on the first sub-tab > Invoices in your Amenitiz administrator area:
Now, click on the Send button located on the right of each invoice. A new window will pop up with all the information already pre-filled. If needed, you will be able to change the email address of the receiver and the email body:
Click on > Send to simply send your Invoice.
If you want to send an estimate by email, you can follow the same steps by going to Invoices > Estimates.