NOVEMBER 29, 2016 https://travel.state.gov/
As of November 21, 2016, the National Visa Center (NVC) no longer accepts documents submitted by email for cases processing at the U.S. Consulate in Ciudad Juarez. The only applicants affected by this change are those whose case number begins with the three letter
code “MEP.”
If you are sending documents to NVC on behalf of an immigrant visa applicant who will interview in Ciudad Juarez, please mail those documents to NVC following the instructions on the NVC “Submit Documents” page. NVC will also contact applicants with an MEP case number to provide an updated case number.