Storesource Option

Introduced in release: 8.0.2.2

The _source field in Elasticsearch contains the document body that was passed at index time. If  is enabled, the message store will create the elasticsearch store/msg index mapping with the _source field enabled; IMAP copy will use the _source field from Elasticsearch to index the message on the destination folder. The _source field data consumes a lot of disk space. You might want to disable the _source field if storage space is limited. Disabling the _source field will disable the ability to reindex, upgrade or repair index from Elasticsearch. See https://www.elastic.co/guide/en/elasticsearch/reference/current/mapping-source-field.html before disabling this option.

The default value is: 1

See also:
 * Elasticsearch options