Complex sentence: DX Mail provide a secure alternative to NZ Post's PO box mailing info structure, whereas Private Box actually provide a totally Virtual Solution whereby the customer doesn't even need to pick up the mail is forwarded on to them.
Split into simpler sentences: DX Mail provide a secure alternative to NZ Posts PO box mailing info structure, whereas Private Box actually provide a totally Virtual Solution. Whereby the customer doesn't even need to pickup the mail is forwarded on to them.