Wealthfront absolutely supports automated investments and has for years, please edit or delete this as it's incorrect. https://support.wealthfront.com/hc/en-us/articles/3600292269...
I don't have their cash account but I set up repeat bimonthly transfers of a set amount from my checking account easy enough.
Re:UBS, Wealthfront Cancel $1.4B Deal
by chris47493 on Saturday September 03, 2022 @09:40AM
(#32701794)
Automated deposits? Yes they have that, I use it myself
I don’t believe Wealthfront actually supports this. If they did, I would use it.
They have you set targets for your cash account. Then any amount of money over that target gets invested into Wealthfront[0].
Vanguard does actually support this [1].
[0] https://support.wealthfront.com/hc/en-us/articles/3600451894...
[1] https://support.vanguard.com/tutorials/automatic-investments