title: How to check email id existance in java script?
body: <p>I am taking emails id's on input form along with other details like name, address,contact no etc. Now, User can enter any email id's.</p>
  
  <p>e.g. abc@abc.com</p>
  
  <p>I can do check for standard domain whether is it present or not. but Is there any way available to check that email id exist or not?</p>
  
  <p>Is there any API available?? </p>
  
  <p>How can i detect wrong email id's.</p>
  
  <p>would be grateful for help...</p>