How To check email existed or not
I have developed one web application
in that i have one user registration application and having fields like name dob and Email id.
if the user specifies any email id then we have to send a mail to specified email address. sending mail is ok.
but before this i have to check the specified email id is existed or not
i mean domain and address were existed or not.
and if mail id is not correct then we will get a failure notice but i want to
find the response if it is failure. not failure mail.
How can i do it.