"mailstore" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "mail",
        "3": "store"
      },
      "expansion": "mail + store",
      "name": "compound"
    }
  ],
  "etymology_text": "From mail + store.",
  "forms": [
    {
      "form": "mailstores",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mailstore (plural mailstores)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "source": "w"
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          "source": "w"
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          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
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            "Fundamental"
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          "source": "w"
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      "examples": [
        {
          "ref": "2000, Dianna Mullet, Kevin Mullet, Managing IMAP, page 6:",
          "text": "Not too long ago, most mailstores consisted of a single text file per user containing the user's messages concatenated together within that file.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A structure in a file system that stores electronic mail."
      ],
      "id": "en-mailstore-en-noun-DEMiXR~J",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "structure",
          "structure"
        ],
        [
          "file system",
          "file system"
        ],
        [
          "electronic mail",
          "electronic mail"
        ]
      ],
      "raw_glosses": [
        "(computing) A structure in a file system that stores electronic mail."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "mailstore"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "mail",
        "3": "store"
      },
      "expansion": "mail + store",
      "name": "compound"
    }
  ],
  "etymology_text": "From mail + store.",
  "forms": [
    {
      "form": "mailstores",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mailstore (plural mailstores)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        {
          "ref": "2000, Dianna Mullet, Kevin Mullet, Managing IMAP, page 6:",
          "text": "Not too long ago, most mailstores consisted of a single text file per user containing the user's messages concatenated together within that file.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A structure in a file system that stores electronic mail."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
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        [
          "structure",
          "structure"
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          "file system",
          "file system"
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        [
          "electronic mail",
          "electronic mail"
        ]
      ],
      "raw_glosses": [
        "(computing) A structure in a file system that stores electronic mail."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
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  ],
  "word": "mailstore"
}