Send a document (invoice, quotation, ...) to the customer via BPost. For this, the link with Mail-IT-Wize must first be set up.

Use the POST method with, for example, https://api.simplybooks/api/v1/invoices/1001?send_postalmail as the URL.

You do have to provide some additional information (in XML, JSON or form-encoding):

• address_type (text): Address type from which the address data is retrieved. Possible values: "billing" (=standard billing data), "delivery" (=shipping address), "site" (=site address).
  
  
• send_registered (int): "0" for ordinary consignments; "1" for registered mail.
  
  
• document_type: Type of document. Only applicable when sending an invoice. Can contain the following values: 'pdf', 'duplicate', 'reminder', 'reminder_summary'. If not specified, 'pdf' is used.

An example in XML to pass on your data:

<data>
  <address_type>billing</address_type>
  <send_registered>0</send_registered>
</data>

$email = 'luc@mymail.com';
$password = '123456';
 
$post = ['address_type' => 'billing', 'send_registered' => 0];
 
$p = curl_init('https://app.simplybooks.be/api/v1/invoices/1001?send_postalmail');
curl_setopt($p, CURLOPT_USERPWD, $email . ':' . $password);
curl_setopt($p, CURLOPT_POSTFIELDS, $post);
curl_setopt($p, CURLOPT_RETURNTRANSFER, TRUE);
$result_in_xml_string = curl_exec($p);