(match 'name' to 'foo') OR (NOT match 'email' to 'foo').

gistfile1.txt

curl -XGET "http://localhost:9200/_search" -d'
{
   "query": {
      "bool": {
         "should": [
            {
               "match": {
                  "name": "foo"
               }
            },
            {
               "bool": {
                  "must_not": {
                     "match": {
                        "email": "foo"
                     }
                  }
               }
            }
         ]
      }
   }
}'