Thanks to Sellsy, you have the ability to send your invoices by mail.
To use this service, you must first buy credits. To do this, click on the Postal Service button on the top of the interface. Then, from the document overview, click the Send by postal mail button.
A copy of your document will be printed, put it in an envelope, and ship it by mail directly to the client's address.
If you are on the dashboard, click on the "Postal Mail" button on the left hand column of your interface:
You can see your postal shipments and credits from your account.
With this service, you can send your documents more quickly and increase your chances of getting paid faster.