Send emails by default from an alias domain in Gmail for domains

Question

gmail

I have a Google account for domains.
Two domains are linked to the account. One as the main, the second as an alias.

Is there a way to make users send mail from the alias domain instead of the main domain by default?

You cannot delete the alias, because then for 5 days the ability to receive mail sent to addresses in the corresponding domain will be lost.

Answer 1

It won't work by default.
Each user will have to add the corresponding address to the Accounts (in the alias domain), and enter the confirmation code.