Firebase Auth email verification

[L_wonder Gaming]

Hi,

Does firebase auth verify emails sent out to users. ie forgot password emails.

I have added the firebase txt and cname records to my dns during custom domain setup however, emails sent by firebase auth using my custom domain still comes up on client end as unverified and may be treated as spam. ie. email comes with a warning saying google cannot verify the sender.

Is there a step I may have missed?

Regards,

Marcus