its very important feature for your whatsapp chat.
open your whatsapp and go to settings men like this
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select option "settings" like this
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select option "chat" like this
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now select option "chat history" like this
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now select option "email chat" like this
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now select any chat like i choose my chat with JOHN
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now an option block opens up whether you want to attach media files or not.
select any option like this
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now it will ask whether you want to send via gmail or any other mail option. select any option like this
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now gmail opens up. write your gmail i.d and press option send like this
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after sending your chat will be sent as word file to your desired gmail i.d
thats it. thankyou....