Special Delivery by 9 am and Saturday Guaranteed will operate between the Island and the UK under a deal with Royal Mail.
Special Delivery by 9 am is for documents that need to be delivered early the following day and, says the company, is available to 99 per cent of UK addresses.
Items can be collected from local addresses, either daily or on an ad-hoc basis.
The services are also available through Jersey Post’s retail network and allow customers to post at any sub-post office before 14 pm.
Saturday Guaranteed is now available for documents sent on a Friday.
The existing next-day delivery by 1 pm service will continue, at £5 less that the 9 am delivery.