When you have created an invoice you can chose to send it in the following ways.

Send as email: 
An e-mail is sent to your customer with a link to the online invoice. When the customer clicks on the link, the invoice is marked as read. Both you and your customer can follow events in the record history on the online invoice, such as when it was sent, read, and marked as paid in the record history. In that way both of you are aware of the situation. 

Send as a letter: The invoice is printed in four colour printing and sent via first-class mail. Your company's logo is directly visible through the envelope window. Invoices sent before one p.m. are sent on the same day. 

Send as email and letter:
You can chose to first send the invoice via e-mail to your customer. If your customer does not click the link to the online invoice within two days from when the e-mail is sent, a letter is automatically sent by post to your customer. 

Sell the invoice: 
If you chose to sell the invoice, one of our invoice purchasing partners will take over the risk for the invoice and all dealings with the customer. A credit check of your customer will be conducted and notice of payment is usually done within 24 hours.