Counterpedia · Subject

Wikidata observation

MH Message Handling System

e-mail client

Also known as (5)

MH · RAND MH Message Handling System · rand-mh · RAND MH · MH Message Handler

Observations from Wikidata; separate from governed Counterpedia records. Sources, origins and what has been checked

At a glance

Selected recorded observations. Counterpedia has not independently verified them; inspect the statements for sources and alternative or historical context.

instance of: free software
About this property
This names the relationship or attribute recorded by Wikidata. Any context shown beside it qualifies this particular statement.
Wikidata property P31; Statement & references
inception: 1978
About this property
This names the relationship or attribute recorded by Wikidata. Any context shown beside it qualifies this particular statement.
Wikidata property P571; Statement & references
different from: nmh
About this property
This names the relationship or attribute recorded by Wikidata. Any context shown beside it qualifies this particular statement.
Wikidata property P1889; Statement & references

How these facts are selected

Up to eight distinct properties with readable names and values. One from each available category comes first, then remaining slots follow property category, property code and source order. This keeps names and family details from crowding out work, dates and geography. Media, external identifiers, unnamed targets and statements with incomplete qualifying context stay in the detailed list. The same rule applies to every subject. Context recorded by Wikidata appears beside each selected fact.

Relationships

Outgoing connections are statements about this subject. A connection is not evidence that another subject supports a claim.

different from (P1889): nmh
Relationship name unavailable: mail user agent
Relationship name unavailable: Unix-like operating system
Relationship name unavailable: mh
instance of (P31): free software
Relationship name unavailable: copyrighted
Relationship name unavailable: BSD licenses
instance of (P31): email client
Relationship name unavailable: RAND Corporation

All projected connections & provider records

You are here

MH Message Handling System

Other entries this record states a relationship to. Follow one to keep moving through the universe.

Identity & relations

free software— instance of (P31)stated relationship
email client— instance of (P31)stated relationship

Other connections

nmh— different from (P1889)stated relationship
mail user agent— P366stated relationship
Unix-like operating system— P306stated relationship
mh— P1072stated relationship
copyrighted— P6216stated relationship
BSD licenses— P275stated relationship
RAND Corporation— P178stated relationship

The original records this observation was assembled from, off Counterpedia.

Wikidata: Q1881476 ↗

Keep exploring the surrounding neighborhood.

Explore the MH Message Handling System neighborhood

Assembled from entry read model wikimedia_observation:Q1881476, public release sha256:f33228901a35b0683356002a46df9ceb11f399d05f17abb5c7c78256cbf38ba7. This view is served from published release bytes.

Explore incoming and outgoing relationships →

External identifiers (3)

Identifier lookup links, separate from statement references.

P2209: rand-mh
GND: 4365085-5 ↗
P646: /m/03w23t

Sources and origins

Structured observations: Statements in this view were observed in Wikidata. Their source identifiers and carried history remain available for inspection.
Cited references: Works, URLs and identifiers attached to particular statements. A cited locator is not an independently established support finding. Inspect statement references
Retained evidence: This view carries observation data. It does not supply independently captured copies of the cited documents or establish their custody. Discovering a reference does not register a governed Source Record.
Checks: No completed Check is associated with these statements in this view. Check execution is currently unavailable.

These observations are not governed Counterpedia claims. The origin of an observation can differ from the author or publisher of its cited source.

Documentary coverage

Documentary identifiers

No source identifiers recorded

Identifiers Counterpedia can route

No lookup route known

Reference-route hints

Reference route hint recorded

“Routable” means Counterpedia knows an approved provider capability that can investigate the identifier. It does not mean the source has been captured or checked.

Validation state

1. In Wikidata
No source identifiers recorded.
2. Lookup route
No source identifiers recorded.
3. Lookup result
No lookup recorded for this page.
4. Saved copy
No saved copy for this page.
5. Fixed version
No fixed source version for this page.
6. Check result
Not checked.

These stages describe what this page can show from governed subject-scoped records. A lookup route does not mean a source was found; a lookup result does not mean bytes were saved; and a saved copy does not mean a fixed source version or a Check result exists.

Research frontier

Ready to investigate

None of the recorded identifier routes is marked routable.

Still unresolved

3 identifier routes and 11 reference hints remain research inputs rather than governed evidence.

Authority boundary

What this page establishes

It establishes what the retained Wikimedia observation contains and what investigation paths Counterpedia can describe from that material.

What it does not establish

A Wikidata statement is not automatically Counterpedia evidence.
A routable identifier is not a captured source.
A captured representation is not automatically a fixed source version.
A fixed source version is not automatically a Check result.
Graph proximity and reference counts are not support or corroboration.
A provider observation and candidate locator do not establish source bytes or support.

Presentation contract

Stage template: counterpedia.reader.profile.v1
Counterpedia composition: counterpedia.product.subject.profile.v1

Statements & recorded references

Open a statement to see the references attached to it. Context can limit when, where or how a statement applies. Recorded source URLs, identifier resolvers and source works describe where Wikidata points; none establishes source support or a completed Check.

Check execution is unavailable in this preview. Exact recorded locators remain available to inspect and open.

different from: nmhReference count not carried
Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.
About this property
This names the relationship or attribute recorded by Wikidata. Any context shown beside it qualifies this particular statement.
Wikidata property P1889
No exact source locator is carried for this statement in this view.
Statement identity, reference hashes and carried detail
```
{
  "predicate": "P1889",
  "targetRef": "Q115914398",
  "targetLabel": "nmh"
}
```
Relationship name unavailable: mail user agentReference count not carried
Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.
About this property
The readable name for this property is unavailable here. Its code and exact recorded value are preserved; the code alone does not explain the relationship.
Wikidata property P366
No exact source locator is carried for this statement in this view.
Statement identity, reference hashes and carried detail
```
{
  "predicate": "P366",
  "targetRef": "Q104764409",
  "targetLabel": "mail user agent"
}
```
Relationship name unavailable: Unix-like operating systemReference count not carried
Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.
About this property
The readable name for this property is unavailable here. Its code and exact recorded value are preserved; the code alone does not explain the relationship.
Wikidata property P306
No exact source locator is carried for this statement in this view.
Statement identity, reference hashes and carried detail
```
{
  "predicate": "P306",
  "targetRef": "Q14656",
  "targetLabel": "Unix-like operating system"
}
```
Relationship name unavailable: mhReference count not carried
Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.
About this property
The readable name for this property is unavailable here. Its code and exact recorded value are preserved; the code alone does not explain the relationship.
Wikidata property P1072
No exact source locator is carried for this statement in this view.
Statement identity, reference hashes and carried detail
```
{
  "predicate": "P1072",
  "targetRef": "Q124845089",
  "targetLabel": "mh"
}
```
Relationship name unavailable: https://sourceforge.net/projects/rand-mh/files/MH/Reference count not carriedRecorded context: Relationship name unavailable: named value unavailable in this release; Relationship name unavailable: No value recordedThis statement has context that cannot be fully shown here. An unresolved name or missing qualification can change how it should be understood.
Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.
About this property
The readable name for this property is unavailable here. Its code and exact recorded value are preserved; the code alone does not explain the relationship.
Wikidata property P1324
No exact source locator is carried for this statement in this view.
Qualifiers
Relationship name unavailable: named value unavailable in this release
Relationship name unavailable: No value recorded
Statement identity, reference hashes and carried detail
```
{
  "predicate": "P1324",
  "literalValue": "https://sourceforge.net/projects/rand-mh/files/MH/",
  "qualifiers": {
    "observedSnakCount": 2,
    "retainedSnaks": [
      {
        "propertyPid": "P10627",
        "datatype": "wikibase-item",
        "datavalue": {
          "type": "wikibase-entityid",
          "value": {
            "entity-type": "item",
            "id": "Q165400",
            "numeric-id": 165400
          }
        },
        "snaktype": "value"
      },
      {
        "propertyPid": "P8423",
        "datatype": "wikibase-item",
        "snaktype": "novalue"
      }
    ],
    "truncated": false
  }
}
```

inception: 19781 recorded reference

Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.

About this property

This names the relationship or attribute recorded by Wikidata. Any context shown beside it qualifies this particular statement.

Wikidata property P571

No exact source locator is carried for this statement in this view.

Statement identity, reference hashes and carried detail

{
  "predicate": "P571",
  "literalValue": {
    "after": 0,
    "before": 0,
    "calendarmodel": "http://www.wikidata.org/entity/Q1985727",
    "precision": 9,
    "time": "+1978-00-00T00:00:00Z",
    "timezone": 0
  },
  "referencesSummary": {
    "referenceCount": 1,
    "referencePropertyPids": [
      "P813",
      "P854"
    ],
    "referenceHashes": [
      "478c1b294b6cada1c75c1d7f7f70c6dbd4efbf62"
    ],
    "propertyPidSummaryTruncated": false,
    "referenceHashSummaryTruncated": false
  }
}

Relationship name unavailable: https://sourceforge.net/p/rand-mh/mailman/rand-mh-devel/1 recorded referenceRecorded context: Relationship name unavailable: programmerThis statement has context that cannot be fully shown here. An unresolved name or missing qualification can change how it should be understood.

Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.

About this property

The readable name for this property is unavailable here. Its code and exact recorded value are preserved; the code alone does not explain the relationship.

Wikidata property P8934

No exact source locator is carried for this statement in this view.

Qualifiers

Relationship name unavailable: programmer

Statement identity, reference hashes and carried detail

{
  "predicate": "P8934",
  "literalValue": "https://sourceforge.net/p/rand-mh/mailman/rand-mh-devel/",
  "referencesSummary": {
    "referenceCount": 1,
    "referencePropertyPids": [
      "P813",
      "P854"
    ],
    "referenceHashes": [
      "84b47a292e1a311a24c717f48d13f02d1b5e805d"
    ],
    "propertyPidSummaryTruncated": false,
    "referenceHashSummaryTruncated": false
  },
  "qualifiers": {
    "observedSnakCount": 1,
    "retainedSnaks": [
      {
        "propertyPid": "P2360",
        "valueLabel": "programmer",
        "datatype": "wikibase-item",
        "datavalue": {
          "type": "wikibase-entityid",
          "value": {
            "entity-type": "item",
            "id": "Q5482740",
            "numeric-id": 5482740
          }
        },
        "snaktype": "value"
      }
    ],
    "truncated": false
  }
}

instance of: free softwareReference count not carried
Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.
About this property
This names the relationship or attribute recorded by Wikidata. Any context shown beside it qualifies this particular statement.
Wikidata property P31
No exact source locator is carried for this statement in this view.
Statement identity, reference hashes and carried detail
```
{
  "predicate": "P31",
  "targetRef": "Q341",
  "targetLabel": "free software"
}
```

Relationship name unavailable: http://rand-mh.sourceforge.net/1 recorded referenceRecorded context: Relationship name unavailable: EnglishThis statement has context that cannot be fully shown here. An unresolved name or missing qualification can change how it should be understood.

Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.

About this property

The readable name for this property is unavailable here. Its code and exact recorded value are preserved; the code alone does not explain the relationship.

Wikidata property P856

No exact source locator is carried for this statement in this view.

Qualifiers

Relationship name unavailable: English

Statement identity, reference hashes and carried detail

{
  "predicate": "P856",
  "literalValue": "http://rand-mh.sourceforge.net/",
  "referencesSummary": {
    "referenceCount": 1,
    "referencePropertyPids": [
      "P143"
    ],
    "referenceHashes": [
      "9a24f7c0208b05d6be97077d855671d1dfdbc0dd"
    ],
    "propertyPidSummaryTruncated": false,
    "referenceHashSummaryTruncated": false
  },
  "qualifiers": {
    "observedSnakCount": 1,
    "retainedSnaks": [
      {
        "propertyPid": "P407",
        "valueLabel": "English",
        "datatype": "wikibase-item",
        "datavalue": {
          "type": "wikibase-entityid",
          "value": {
            "entity-type": "item",
            "id": "Q1860",
            "numeric-id": 1860
          }
        },
        "snaktype": "value"
      }
    ],
    "truncated": false
  }
}

Relationship name unavailable: copyrightedReference count not carried
Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.
About this property
The readable name for this property is unavailable here. Its code and exact recorded value are preserved; the code alone does not explain the relationship.
Wikidata property P6216
No exact source locator is carried for this statement in this view.
Statement identity, reference hashes and carried detail
```
{
  "predicate": "P6216",
  "targetRef": "Q50423863",
  "targetLabel": "copyrighted"
}
```
Relationship name unavailable: BSD licenses1 recorded reference
Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.
About this property
The readable name for this property is unavailable here. Its code and exact recorded value are preserved; the code alone does not explain the relationship.
Wikidata property P275
No exact source locator is carried for this statement in this view.
Statement identity, reference hashes and carried detail
```
{
  "predicate": "P275",
  "targetRef": "Q191307",
  "targetLabel": "BSD licenses",
  "referencesSummary": {
    "referenceCount": 1,
    "referencePropertyPids": [
      "P143"
    ],
    "referenceHashes": [
      "9a24f7c0208b05d6be97077d855671d1dfdbc0dd"
    ],
    "propertyPidSummaryTruncated": false,
    "referenceHashSummaryTruncated": false
  }
}
```

Relationship name unavailable: 6.8.51 recorded referenceRecorded context: Relationship name unavailable: 1997This statement has context that cannot be fully shown here. An unresolved name or missing qualification can change how it should be understood.

Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.

About this property

The readable name for this property is unavailable here. Its code and exact recorded value are preserved; the code alone does not explain the relationship.

Wikidata property P348

No exact source locator is carried for this statement in this view.

Qualifiers

Relationship name unavailable: 1997

Statement identity, reference hashes and carried detail

{
  "predicate": "P348",
  "literalValue": "6.8.5",
  "referencesSummary": {
    "referenceCount": 1,
    "referencePropertyPids": [
      "P813",
      "P854"
    ],
    "referenceHashes": [
      "afd995aefaeb45d4b748f5ab613c939f088178bb"
    ],
    "propertyPidSummaryTruncated": false,
    "referenceHashSummaryTruncated": false
  },
  "qualifiers": {
    "observedSnakCount": 1,
    "retainedSnaks": [
      {
        "propertyPid": "P577",
        "datatype": "time",
        "datavalue": {
          "type": "time",
          "value": {
            "after": 0,
            "before": 0,
            "calendarmodel": "http://www.wikidata.org/entity/Q1985727",
            "precision": 9,
            "time": "+1997-00-00T00:00:00Z",
            "timezone": 0
          }
        },
        "snaktype": "value"
      }
    ],
    "truncated": false
  }
}

instance of: email clientReference count not carried
Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.
About this property
This names the relationship or attribute recorded by Wikidata. Any context shown beside it qualifies this particular statement.
Wikidata property P31
No exact source locator is carried for this statement in this view.
Statement identity, reference hashes and carried detail
```
{
  "predicate": "P31",
  "targetRef": "Q570871",
  "targetLabel": "email client"
}
```
Relationship name unavailable: mhReference count not carried
Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.
About this property
The readable name for this property is unavailable here. Its code and exact recorded value are preserved; the code alone does not explain the relationship.
Wikidata property P1073
No exact source locator is carried for this statement in this view.
Statement identity, reference hashes and carried detail
```
{
  "predicate": "P1073",
  "targetRef": "Q124845089",
  "targetLabel": "mh"
}
```
Relationship name unavailable: RAND Corporation1 recorded reference
Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.
About this property
The readable name for this property is unavailable here. Its code and exact recorded value are preserved; the code alone does not explain the relationship.
Wikidata property P178
No exact source locator is carried for this statement in this view.
Statement identity, reference hashes and carried detail
```
{
  "predicate": "P178",
  "targetRef": "Q861141",
  "targetLabel": "RAND Corporation",
  "referencesSummary": {
    "referenceCount": 1,
    "referencePropertyPids": [
      "P813",
      "P854"
    ],
    "referenceHashes": [
      "08251251dfd36f28de106217ad3093aaefbae802"
    ],
    "propertyPidSummaryTruncated": false,
    "referenceHashSummaryTruncated": false
  }
}
```

Relationship name unavailable: http://www.ics.uci.edu/~mh/1 recorded referenceRecorded context: Relationship name unavailable: named value unavailable in this release; Relationship name unavailable: English; start time: Unknown value recorded; end time: Unknown value recordedThis statement has context that cannot be fully shown here. An unresolved name or missing qualification can change how it should be understood.

Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.

About this property

The readable name for this property is unavailable here. Its code and exact recorded value are preserved; the code alone does not explain the relationship.

Wikidata property P856

No exact source locator is carried for this statement in this view.

Qualifiers

Relationship name unavailable: named value unavailable in this release

Relationship name unavailable: English

start time: Unknown value recorded

end time: Unknown value recorded

Statement identity, reference hashes and carried detail

{
  "predicate": "P856",
  "literalValue": "http://www.ics.uci.edu/~mh/",
  "referencesSummary": {
    "referenceCount": 1,
    "referencePropertyPids": [
      "P1065",
      "P813"
    ],
    "referenceHashes": [
      "f8f5b5405009596e331c7ff93b95374b96c89259"
    ],
    "propertyPidSummaryTruncated": false,
    "referenceHashSummaryTruncated": false
  },
  "qualifiers": {
    "observedSnakCount": 4,
    "retainedSnaks": [
      {
        "propertyPid": "P2241",
        "datatype": "wikibase-item",
        "datavalue": {
          "type": "wikibase-entityid",
          "value": {
            "entity-type": "item",
            "id": "Q1193907",
            "numeric-id": 1193907
          }
        },
        "snaktype": "value"
      },
      {
        "propertyPid": "P407",
        "valueLabel": "English",
        "datatype": "wikibase-item",
        "datavalue": {
          "type": "wikibase-entityid",
          "value": {
            "entity-type": "item",
            "id": "Q1860",
            "numeric-id": 1860
          }
        },
        "snaktype": "value"
      },
      {
        "propertyPid": "P580",
        "datatype": "time",
        "snaktype": "somevalue"
      },
      {
        "propertyPid": "P582",
        "datatype": "time",
        "snaktype": "somevalue"
      }
    ],
    "truncated": false
  }
}

Relationship name unavailable: https://rand-mh.sourceforge.io/Reference count not carriedRecorded context: Relationship name unavailable: EnglishThis statement has context that cannot be fully shown here. An unresolved name or missing qualification can change how it should be understood.
Observation origin: Wikidata. References below are citations attached to this statement, not independently captured evidence.
About this property
The readable name for this property is unavailable here. Its code and exact recorded value are preserved; the code alone does not explain the relationship.
Wikidata property P856
No exact source locator is carried for this statement in this view.
Qualifiers
Relationship name unavailable: English
Statement identity, reference hashes and carried detail
```
{
  "predicate": "P856",
  "literalValue": "https://rand-mh.sourceforge.io/",
  "qualifiers": {
    "observedSnakCount": 1,
    "retainedSnaks": [
      {
        "propertyPid": "P407",
        "valueLabel": "English",
        "datatype": "wikibase-item",
        "datavalue": {
          "type": "wikibase-entityid",
          "value": {
            "entity-type": "item",
            "id": "Q1860",
            "numeric-id": 1860
          }
        },
        "snaktype": "value"
      }
    ],
    "truncated": false
  }
}
```

Continue exploring

Inspect all recorded statements in pages →

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Data and provenance

Wikidata entity IDs are external identifiers, not Counterpedia canonical subject identities. Rendering this page does not mint a governed identity. Release identities and artifact hashes identify the data used for this view; none establishes verification.

Provenance rows: 27
Acquisition repository: thelaplage/counterpedia-acquisition
Acquisition revision: e6add6a4d8e1668a9ac486407e52974724563ce1, 891f24c5cca64aa69b1dc1b2150e991b940171b0
Provider identity · Observation origin: Wikidata · External entity ID: Q1881476 on Wikidata ↗
Served release: sha256:f33228901a35b0683356002a46df9ceb11f399d05f17abb5c7c78256cbf38ba7

No exact claim–source–Check association has been supplied to this page. Recorded references do not establish verification.

graph_membership != truth
graph_edge != support
repeated_identifier != independent_corroboration
projection != admission
Serving a published subset: joined entities + 1-hop neighborhood of 35,994 exact Wikipedia–Wikidata title matches.

Carried provenance rows

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      "acquisition_revision": "e6add6a4d8e1668a9ac486407e52974724563ce1",
      "family": "wikidata_aliases",
      "input_row_digest": "sha256:9da5b64883a121511ff515c88184ef5e54f31338209bd76b6cff8595f7789145",
      "output_file": "aliases.ndjson",
      "row_index": 69304,
      "snapshot_id": "wikidata-widen0-848k-aliases@2026-08-24"
    }
  },
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    "family": "wikimedia_graph_row",
    "detail": {
      "acquisition_repo": "thelaplage/counterpedia-acquisition",
      "acquisition_revision": "e6add6a4d8e1668a9ac486407e52974724563ce1",
      "family": "wikidata_aliases",
      "input_row_digest": "sha256:28f260f7e4d6a4d251352267ba0d9ab52378a72a1509994d6a00e8282184ad3e",
      "output_file": "aliases.ndjson",
      "row_index": 69306,
      "snapshot_id": "wikidata-widen0-848k-aliases@2026-08-24"
    }
  },
  {
    "family": "wikimedia_graph_row",
    "detail": {
      "acquisition_repo": "thelaplage/counterpedia-acquisition",
      "acquisition_revision": "e6add6a4d8e1668a9ac486407e52974724563ce1",
      "family": "wikidata_aliases",
      "input_row_digest": "sha256:b2d48fce7eb9441639487d6b04c4144769161f345bd37ff076a1fb1b13b4c341",
      "output_file": "aliases.ndjson",
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      "snapshot_id": "wikidata-widen0-848k-aliases@2026-08-24"
    }
  },
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    "family": "wikimedia_graph_row",
    "detail": {
      "acquisition_repo": "thelaplage/counterpedia-acquisition",
      "acquisition_revision": "e6add6a4d8e1668a9ac486407e52974724563ce1",
      "family": "wikidata_aliases",
      "input_row_digest": "sha256:1897d792cfeefadbf47a010a7fdb7ed0359e36bfa53ac2003b217a6eff6ff2ff",
      "output_file": "aliases.ndjson",
      "row_index": 69307,
      "snapshot_id": "wikidata-widen0-848k-aliases@2026-08-24"
    }
  },
  {
    "family": "wikimedia_graph_row",
    "detail": {
      "acquisition_repo": "thelaplage/counterpedia-acquisition",
      "acquisition_revision": "e6add6a4d8e1668a9ac486407e52974724563ce1",
      "family": "wikidata_aliases",
      "input_row_digest": "sha256:c9d54c972df8980b00b389e7f1a58d76fe165abb0f0ccf35a02220cde32a92f4",
      "output_file": "aliases.ndjson",
      "row_index": 69305,
      "snapshot_id": "wikidata-widen0-848k-aliases@2026-08-24"
    }
  },
  {
    "family": "wikimedia_graph_row",
    "detail": {
      "acquisition_repo": "thelaplage/counterpedia-acquisition",
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Classification identities

[
  {
    "classQid": "Q341",
    "label": "free software",
    "href": "/browse/types/Q341"
  },
  {
    "classQid": "Q570871",
    "label": "email client",
    "href": "/browse/types/Q570871"
  }
]

Wikidata content CC0; Wikipedia titles CC BY-SA — attribution.