Email not to admin, When user create an account
Download, install &amp; Enable Rules module.
Goto

Admin -> Configuration -> Rules


-> Click on Component tab -> Add Component

-> Select Action set -> In Component Plugin -> 

Name: Send email to inactive user

Datatype: User,

Label:active_user,

Machine_name: active_user

Usage: Parameter

-> Add action -> data selector: active_user

-> Enter the subject &amp; body &amp; save

-> Go back &amp; Add new rule

-> React on Event : After Saving a new new user a/c

-> Add Action  -> Select Schedule Component Evaluation

-> Value : Choose your component

-> Identifier : [account:uid]

-> Data selector : account

If you have any doubt then you may CLICK