RE:  Queue subscription, mention, and follow notification emails to be sent in the background. This prevents delays when posting replies to topics with many subscribers. Recommended for forums with active subscriptions.

Question 1: I want to understand the process. Does the comment post first and then the email process is called or is the email process called during the comment posting to the subscribers?

Question 2: If for example we have a 100 subscribers and the Send Notification Emails Asynchronously is checked YES, is the comment dumped all at once to the server for email processing or in your program do you throttle or rate limit the email sending?