Automated transfers between RBC and Scotiabank

Long story short, I had to open a Scotiabank account in conjunction with my mortgage renewal. I am a client of RBC (all my main accounts are there, including my direct deposit of my payroll). I'd like to set up an automatic transfer from RBC to Scotiabank on every payday.

Is there an easy way to do this? I don't see any options on this on either of the two banks apps. I don't want to do an etransfer since I will definitely forget to do it at times.

Thanks!