In the outbox you can find all documents which haven't been sent out to the customer yet. These documents are no drafts which can be changed, they are fully created invoices, reminders or credit notes which haven't been sent out. The only thing which can be changed is the text in the prologue or epilogue.
When you deactivate the automatically dispatch of invoices or reminders, they will be stored in the outbox for sending them out manually. Just click the "Send" button to send out the wanted documents to your customers.
If you want to change the texts in the prologue or epilogue or if you want to add some additional information here, you can click the document number and fill in your text. Now click the "Save" button or press the "Send" button to send it out directly.