Step 1 : Go to gmail.com
Step 2 : Click over Setting icon, and from the list, click over Settings .
Step 3 : make sure you are in “General” from Settings options , then Scroll until your reach “Conversation View” .
Step 4 : Select “Conversation View off “
Step 5 : Click over “Save the changes ”
and that way you will get each email separatist rather than as conversation or thread