Create a free account with your mobile number. You get sixty free credits for use to Australian numbers, with 30 days expiry.
Each 160 character text is 1 credit.
Each MMS is 2 credits.
Login to the portal, where you can schedule or instantly send SMS messages that appear exactly as they would appear if sent from your device to the recipient.
Telstra accounts only (?)
Perfect to schedule a Christmas day or NYE message to friends and family.
I thought I'd try anyway but only works with active mobile accounts. for all of us who have telstra accounts for other reasons.