We prefer to receive e-invoices. Processing e-invoices is quicker, more reliable and cheaper than paper invoices for both the sender and the recipient.
The invoices should be attached in PDF format to an email. Emails must not contain more than one invoice (and related appendices to the invoice). You can also attach any additional invoice-related documents to the email. The maximum attachment size is 2 MB. After you have emailed your invoice, the service will respond with an acceptance or rejection email within 15 minutes.