How best to encourage online rent payments?

[Greg Hoffmann]

Hi BP!

New self managing landlord here. I'm going to be signing up with Cozy/Apartments.com and love the idea of tenants paying online. In CA we can't mandate they do so, so how best to encourage them to do so?  Can there be a fee for not using online payment? Or a credit for using online payment? I also want to make sure this doesn't complicate my bookkeeping too much.

Thanks for you advice!