Where is the thing to automatically add the contacts to whom the message has been sent?

Where is the thing to automatically add the contacts to whom the message has been sent?

Zoho Mail Team,

Where is the thing to automatically add the contacts to whom the message has been sent? I think it was there somewhere or was it an illusion for me?

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Deepak Vasudevan
http://thamizhththendral.blogspot.com/