Ally

$100 Cash Bonus

• Open a new Ally Bank Savings Account.
• Set up (within your new account) and start a qualifying monthly automated recurring transfer (**into **the account) within 30 days of account opening.
• Complete at least 3 back-to-back monthly automated recurring transfers.
• Your $100 welcome bonus will be deposited within 30 days of receiving your 3rd recurring transfer.

The website doesn't seem to show a minimum transfer amount.

Does not stack with the checking account offer, but that one requires direct deposit so this is probably more accessible.