Manually send invitation mail to alternate email (alternateEmail)

Hi!

When onboarding new users, we require to manually send emails to their alternate email, and not their work email since they still don’t have access to it.

Is there any api call that can invite to the alternate email? I do know there is a cc call but it defaults to the work email. While there is the automatic invite to alternate email, its not consistent.

Greetings