When and Where to use this verify E-Mail Block

Can please someone tell what is does this block do and what is use of this ?
Is It used in Sign Up or Sign In process ?

Also how to help me to get such email for verification when a user sign up. Because I am not reciving any email for verification on user registration.

You can setup the email and its look by yourself in firebase dashboard.

@Mika I have done that but I am still not reciving Email

Its for email sign-in not for google sign-in
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@agc_softwares I have Enabled it too

I dont remember right now the secuence beacuse i use gmail sign up
But, I think it’s something like this to verify the e-mail

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