JobLeads won't send you any printed invoices by email or post. You may view and download all your invoices in your account.
For this, please click on "My data" in the top menu. You are now in your personal area where you may change your access data and other information. On the left side, you will see the option "Invoices" - click on it.
Here you will find all your invoices and, if applicable, payment notifications, e. g. in the case where a transaction did not go through. Select the invoice you want to download it.