Is it legal for ubank to do this?
I thought in Australia, deposits at banks were protected up to $250k?
https://www.apra.gov.au/deposit-checker-are-your-deposits-pr…
"We’ve noticed that your account(s) below haven't been used for some time and have a balance of $20 or less.
However, if you've recently made a deposit, please ignore this message. Your account will remain open.
We want to make sure you’re getting the most out of your account(s), so read the options below to either keep it open or close your account(s).
Keep your account open:
If you’d like to keep your account(s) open, you’ll need to deposit some funds (this can be as little as $1) by 27 March 2023.
OR
Close your account:
If you’re happy for your account(s) to be closed, you don't have to do anything, and we'll simply donate the remaining funds to charity after 27 March 2023."
Financial Claims Scheme covers you against loss in the event of the institution failing.
General housekeeping for low balance accounts is a totally different concept.