Yes, with the Klaviyo app Talkable synchronizes all people who opt-in for email marketing during signup. This way you will keep all your emails in one place in an automated way. By default, we send through only email and name.
Could this email potentially be sent to someone who is unsubscribed in our Klaviyo account? — Yes.
What happens when someone unsubscribes from this email — does it share that information with Klaviyo and unsubscribe them there as well? — No, we don’t also opt-out users from Klaviyo and this will need to be done separately if desired.