With Thriday invoices can be drafted and sent as text messages as well as via email. To send a copy of your invoice as a text:
1. From the Home screen, click on Invoices
2. Click on DRAFT INVOICE and create a new invoice
3. Under Contact Details enter your client's mobile number
4. Ensure the 'Send a link to the invoice via SMS' box is ticked
5. Click SEND INVOICE