The original question was in regards to pulling a single email address from a string.
Your question is about pulling multiple email addresses from a string.
The is very different (and the solution will be much more complex).
Basically, you should only post back to the original thread if you have a question regarding the current question or solution (any maybe if you have a variation that is only trivially different).
Posting to a new thread also increases the chances that it will be seen and answered, as it will show up on the "Unanswered threads" listing that many people use to look for unanswered questions to answers.