i recored the following action on rediffmail.com site

1) login
2) send a mail ( to my another mail site say mail.yahoo.com)
3) logged out

when i reply the script with one iteration,
the ACT IS NOT SENDING THE MAIL to my yahoo mail
how can i know that that the script working or not?
what are all setting i have to do?
what i am doing wrong?

thanks in advance