ElasticSearch Analyzer and Tokenizer for Emails

Question

I could not find a perfect solution either in Google or ES for the following situation, hope someone could help here.

Suppose there are five email addresses stored u

Answer 1

Mapping:

PUT /test
{
  "settings": {
    "analysis": {
      "filter": {
        "email": {
          "type": "pattern_capture",
          "preserve_original": 1,
          "patterns": [
            "([^@]+)",
            "(\\p{L}+)",
            "(\\d+)",
            "@(.+)",
            "([^-@]+)"
          ]
        }
      },
      "analyzer": {
        "email": {
          "tokenizer": "uax_url_email",
          "filter": [
            "email",
            "lowercase",
            "unique"
          ]
        }
      }
    }
  },
  "mappings": {
    "emails": {
      "properties": {
        "email": {
          "type": "string",
          "analyzer": "email"
        }
      }
    }
  }
}

Test data:

POST /test/emails/_bulk
{"index":{"_id":"1"}}
{"email": "john.doe@gmail.com"}
{"index":{"_id":"2"}}
{"email": "john.doe@gmail.com, john.doe@outlook.com"}
{"index":{"_id":"3"}}
{"email": "hello-john.doe@outlook.com"}
{"index":{"_id":"4"}}
{"email": "john.doe@outlook.com"}
{"index":{"_id":"5"}}
{"email": "john@yahoo.com"}

Query to be used:

GET /test/emails/_search
{
  "query": {
    "term": {
      "email": "john.doe@gmail.com"
    }
  }
}