how to redirect to email login page based on email address domain
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i have a registration page there i am capturing user email address, once the registration is completed user has to activate an account.. this process is working fine.. now what i am looking here is

   i would like to give "Go to my Inbox" button  when the user click on this button it should automatically redirect to email login page

ex: when  user enter yahoo email id at the time of registration in the next step it should redirect to yahoo login page..

ex: when  user enter gmail email id at the time of registration in the next step it should redirect to gmail login page..

ex: hotmail
ex: aol...ect

can any one give me some suggestion on this

