I have deleted my all mails from inbox and trash and drafts... so how can I recovered my all mails in gmail a/c?
I have deleted by mistake my all mails from inbox and then from trash also.. and also deleted my drafts column... so please tell me that how can I recoverd because its an important mail.. all company details are in it and workers details... if I could not got this my boss will be fired me from company.. please help me

You can't.
Contact Gmail/Google for any support.