Email Tokenizer Problem

Query

{
  "bool" : {
    "should" : [ {
      "filtered" : {
        "query" : {
          "match_all" : {
          }
        },
        "filter" : {
          "bool" : {
            "should" : {
              "prefix" : {
                "person_name" : "@gmail.com"
              }
            }
          }
        }
      }
    }, {
      "query_string" : {
        "query" : "(@gmail.com*) ",
        "fields" : [ "companyName", "fullName", "mainEmail", "displayAddress" ],
        "default_operator" : "or",
        "allow_leading_wildcard" : true
      }
    } ]
  }
}