Same as last time. Get 1000 Velocity Frequent Flyer points for free just for signing up.
To earn 1,000 bonus Velocity Points, you must sign up for My Post Digital Mailbox between 12 February and 12 March 2015 inclusive. To be eligible to earn Velocity Points, your first and last name must match the information in your Velocity account. Velocity Points will be allocated to your Velocity Account within 10 business days from transaction date.
If you don't have a Velocity account yet you can join for free here.
For those unfamiliar with Mypost Digital Mailbox it is basically a website that stores your bills electronically and allows you to pay them online. My personal opinion is that it's nothing ground breaking but it's slightly more convenient than the old paper and email bills I received which is why I use it. The 50 Velocity points per bill paid is a bonus.
Disclosure: I have nothing to do with Aust Post but I work for Virgin Australia who run the Velocity program.
Is it free to sign up and are there subscription costs?