防止多线程网站消耗太多资源。

I have built a bulk email sending website for a client that is required to send out 80,000 emails in a single send. It basically creates a new thread for the send so that control can be handed back to the UI (so that a feedback page can load) and then a new thread is created for each company in order to send emails to their recipients. The emails are all queued up using this code:I have built a bulk email sending website for a