No, it is never recommended that you file the same tax return twice (once you've mailed your taxes they are considered filed).
Attempting to e-file your return, after mailing them, may result in the IRS rejecting the e-filed return due to someone already filing using that name, social security number and birthdate.
Additionally, if there is a refund due, submitting two returns will slow down your receiving your refund because a person will need to investigate why two returns were received.
