I have some critical sutiuation for sending email.
Lets say :
A sendig request to B, the B sendback response to A. B site does not open. B site sending values internally using CURL concept in php. But A site still open. Once A getting response from B site, A send back again success status to B site.(B does not open- remaind).
The problem is, When A site send back status success, B side no problem. Everything is Ok. But A does not send any status to B site( may be internet down or other problem).
How can i send email, If B site not getting any stauts?? I assure that you understand.