I have a set of emails(more than 50,000) to be sent. I cannot sit logged on to that application until all the emails have been sent (I have a counter which keeps me posted as to how many emails have been sent). what i need is when i click on the button "Send Emails" and if i close my browser i shud have my "send_ mail()" sending emails in the background. This is possible in ASP and i have used it before but i want to know whether its possible in PHP and if possible then How it is to be approached ?