Your membership includes Max’s Intelligent Funds Transfer℠ feature. 

Between scheduled optimizations, you can direct Max to send money from your checking account to your linked online savings accounts, or from these savings accounts back to your checking account with one click. Max automatically determines the best accounts from which to draw the funds, or into which accounts to deposit the funds, so that you continue to optimize your cash.

All funds transfers are handled by your banks, and occur via the ACH network. There are no incremental fees associated with these transfers.