Develop a Regular Expression

I am trying to filter the email for spam. But the filter should not be applied to certain addresses. So, I need one regular expression that can describe the following: | If the text contains **[login to view URL]**and **X-Spam-Level: ******** or if the text contains **[login to view URL]**and **X-Spam-Level: ******** and **not** if the text contains **[login to view URL]** | Note: The test should be case-insesitive, that is, [login to view URL] is same as [login to view URL], etc. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Exclusive and complete copyrights to all work purchased. (No GPL, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site). ## Platform Regular Expression