Welcome to the community !
I’ve found a way to do what you are looking for! After been working on it for hours 
So check this out 
I use regex, to look for numbers after the word “ISO” on the subject and the body of the mail. If there’s any it will continue, so that you can add what ever you want, like getting the code and use it on the web and send the mail. If not it will do nothing !
SearchByKeyWordOutlook.zip (18.9 KB)
Give it a look and let me know how it goes for you 