Auto login redirect based on language

I am using Auto Actions to auto-login a user after they register and send them to a certain page.

can I make an auto action that sends them to a different page depending on the language?
i.e. domain.com/en/register needs to login and redirect to domain.com/en/english and if it's domain.com/nl/register needs to login and redirect to domain.com/nl/dutch

Is such a thing possible?

Depends on if their account has a different language selected for it or not. You grab the current language loaded and in use using the below substitutions.

Name and Tag: [cb:config param="lang" /]
Name: [cb:config param="lang_name" /]
Tag: [cb:config param="lang_tag" /]

You can then use those substitutions in a Conditional to determine which login action to use and each having different login redirects.