It's great to you hear you liked the email. Is this sentence correct?
It's great to YOU hear you liked the email.

I think YOU in the previous sentence is redundant, right? Thank you!

Question

It's great to you hear you liked the email. Is this sentence correct?
It's great to YOU hear you liked the email. 

I think YOU in the previous sentence is redundant, right?  Thank you!

Answer

It's not correct. The correct sentence could be: "It's great to hear that you liked the email."

Answer

It is not redundant, it is wrong and doesn't belong in the sentence. 
The sentence means, that the speaker finds it great knowing and hearing that the other liked the email. 
So 'you' doesn't really belong in the context, unless you mean something else and still it won't be expressed this way.. 

The correct sentence is: 

"It is great to hear, you liked the email."