# MCP tool reference

1 callable tools.

Use tools/call at https://mcp.schedulerzero.com/mcp with the exact tool name and arguments below. The /tools/ paths in this view are documentation identifiers, not HTTP endpoints. Request execution is disabled for this reference.

Inputs are shown for personal API keys (bound) and for OAuth/delegated agents. Output schemas describe MCP structuredContent: native objects pass through; arrays, scalars and null use a data wrapper. Text content retains the native JSON result.

[Connect a client](/mcp/connect) · [Authentication and authorization](/authentication) · [Generated auth guide](/auth.md) · [Download tool catalog](/mcp-catalog.json) · [Agent documentation](/llms.txt)

## delete_unibox_threads

Move one conversation, a batch of conversations, or one message to the trash, where retention eventually removes it for good. Select thread, threads, or message explicitly.

Use only when the customer has asked for mail to be removed from the product's view.

Prefer archiving: it hides a conversation without starting a purge clock. Deletion here does not delete the copy in the mailbox provider, so it is not a way to honour an erasure request on its own.

Obtain the user's explicit authorization before invoking a write or destructive action. This is a client interaction requirement, not a server-issued approval token.

Scopes: unibox:archive

Risk: destructive; confirmation: explicit; idempotency: supported.

### Input schema (personal API key)

```json
{
  "type": "object",
  "anyOf": [
    {
      "type": "object",
      "properties": {
        "workspaceId": {
          "type": "string",
          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
          "format": "uuid"
        },
        "action": {
          "anyOf": [
            {
              "type": "string",
              "enum": [
                "thread"
              ]
            }
          ]
        },
        "threadIds": {
          "type": "array",
          "items": {
            "type": "string",
            "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
            "format": "uuid"
          },
          "minItems": 1,
          "maxItems": 1
        }
      },
      "required": [
        "workspaceId",
        "action",
        "threadIds"
      ],
      "patternProperties": {
        "^(?!(?:workspaceId|action|threadIds)$)[\\s\\S]*$": false
      },
      "additionalProperties": true,
      "propertyNames": {
        "type": "string",
        "enum": [
          "workspaceId",
          "action",
          "threadIds"
        ]
      }
    },
    {
      "type": "object",
      "properties": {
        "workspaceId": {
          "type": "string",
          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
          "format": "uuid"
        },
        "action": {
          "anyOf": [
            {
              "type": "string",
              "enum": [
                "threads"
              ]
            }
          ]
        },
        "threadIds": {
          "type": "array",
          "items": {
            "type": "string",
            "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
            "format": "uuid"
          },
          "minItems": 1,
          "maxItems": 100
        }
      },
      "required": [
        "workspaceId",
        "action",
        "threadIds"
      ],
      "patternProperties": {
        "^(?!(?:workspaceId|action|threadIds)$)[\\s\\S]*$": false
      },
      "additionalProperties": true,
      "propertyNames": {
        "type": "string",
        "enum": [
          "workspaceId",
          "action",
          "threadIds"
        ]
      }
    },
    {
      "type": "object",
      "properties": {
        "workspaceId": {
          "type": "string",
          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
          "format": "uuid"
        },
        "action": {
          "anyOf": [
            {
              "type": "string",
              "enum": [
                "message"
              ]
            }
          ]
        },
        "messageId": {
          "type": "string",
          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
          "format": "uuid"
        }
      },
      "required": [
        "workspaceId",
        "action",
        "messageId"
      ],
      "patternProperties": {
        "^(?!(?:workspaceId|action|messageId)$)[\\s\\S]*$": false
      },
      "additionalProperties": true,
      "propertyNames": {
        "type": "string",
        "enum": [
          "workspaceId",
          "action",
          "messageId"
        ]
      }
    }
  ]
}
```

### Input schema (OAuth / delegated agent)

```json
{
  "type": "object",
  "anyOf": [
    {
      "type": "object",
      "properties": {
        "workspaceId": {
          "type": "string",
          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
          "format": "uuid"
        },
        "action": {
          "anyOf": [
            {
              "type": "string",
              "enum": [
                "thread"
              ]
            }
          ]
        },
        "threadIds": {
          "type": "array",
          "items": {
            "type": "string",
            "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
            "format": "uuid"
          },
          "minItems": 1,
          "maxItems": 1
        }
      },
      "required": [
        "workspaceId",
        "action",
        "threadIds"
      ],
      "patternProperties": {
        "^(?!(?:workspaceId|action|threadIds)$)[\\s\\S]*$": false
      },
      "additionalProperties": true,
      "propertyNames": {
        "type": "string",
        "enum": [
          "workspaceId",
          "action",
          "threadIds"
        ]
      }
    },
    {
      "type": "object",
      "properties": {
        "workspaceId": {
          "type": "string",
          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
          "format": "uuid"
        },
        "action": {
          "anyOf": [
            {
              "type": "string",
              "enum": [
                "threads"
              ]
            }
          ]
        },
        "threadIds": {
          "type": "array",
          "items": {
            "type": "string",
            "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
            "format": "uuid"
          },
          "minItems": 1,
          "maxItems": 100
        }
      },
      "required": [
        "workspaceId",
        "action",
        "threadIds"
      ],
      "patternProperties": {
        "^(?!(?:workspaceId|action|threadIds)$)[\\s\\S]*$": false
      },
      "additionalProperties": true,
      "propertyNames": {
        "type": "string",
        "enum": [
          "workspaceId",
          "action",
          "threadIds"
        ]
      }
    },
    {
      "type": "object",
      "properties": {
        "workspaceId": {
          "type": "string",
          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
          "format": "uuid"
        },
        "action": {
          "anyOf": [
            {
              "type": "string",
              "enum": [
                "message"
              ]
            }
          ]
        },
        "messageId": {
          "type": "string",
          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
          "format": "uuid"
        }
      },
      "required": [
        "workspaceId",
        "action",
        "messageId"
      ],
      "patternProperties": {
        "^(?!(?:workspaceId|action|messageId)$)[\\s\\S]*$": false
      },
      "additionalProperties": true,
      "propertyNames": {
        "type": "string",
        "enum": [
          "workspaceId",
          "action",
          "messageId"
        ]
      }
    }
  ]
}
```

### Output schema (structuredContent)

```json
{
  "$defs": {
    "LeadStoredText": {
      "type": "string",
      "maxLength": 65536
    },
    "EmailAddress": {
      "type": "string",
      "minLength": 3,
      "maxLength": 320,
      "pattern": "^[^\\s@]+@[^\\s@]+\\.[^\\s@]+$"
    },
    "OpaqueId": {
      "type": "string",
      "minLength": 1,
      "maxLength": 512
    },
    "UtcDateTimeEncoded": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}\\.\\d{3}Z$"
    },
    "ThreadLabelId": {
      "type": "string",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
      "format": "uuid"
    },
    "ShortText": {
      "type": "string",
      "minLength": 1,
      "maxLength": 256
    },
    "HttpUrl": {
      "type": "string",
      "minLength": 1,
      "maxLength": 2048,
      "pattern": "^https?:\\/\\/[^\\s/$.?#][^\\s]*$"
    },
    "NonEmptyString": {
      "type": "string",
      "minLength": 1,
      "maxLength": 4096
    },
    "AttachmentId": {
      "type": "string",
      "minLength": 1,
      "maxLength": 512
    }
  },
  "type": "object",
  "anyOf": [
    {
      "allOf": [
        {
          "anyOf": [
            {
              "type": "object",
              "properties": {
                "id": {
                  "type": "string",
                  "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
                  "format": "uuid"
                },
                "inboxId": {
                  "anyOf": [
                    {
                      "type": "string",
                      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
                      "format": "uuid"
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "organizationId": {
                  "type": "string",
                  "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
                  "format": "uuid"
                },
                "subject": {
                  "anyOf": [
                    {
                      "$ref": "#/$defs/LeadStoredText"
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "snippet": {
                  "anyOf": [
                    {
                      "$ref": "#/$defs/LeadStoredText"
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "contact": {
                  "type": "object",
                  "properties": {
                    "emailAddress": {
                      "$ref": "#/$defs/EmailAddress"
                    },
                    "name": {
                      "anyOf": [
                        {
                          "$ref": "#/$defs/LeadStoredText"
                        },
                        {
                          "type": "null"
                        }
                      ]
                    },
                    "leadId": {
                      "anyOf": [
                        {
                          "type": "string",
                          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
                          "format": "uuid"
                        },
                        {
                          "type": "null"
                        }
                      ]
                    }
                  },
                  "required": [
                    "emailAddress",
                    "name",
                    "leadId"
                  ],
                  "patternProperties": {
                    "^(?!(?:emailAddress|name|leadId)$)[\\s\\S]*$": false
                  },
                  "additionalProperties": true,
                  "propertyNames": {
                    "type": "string",
                    "enum": [
                      "emailAddress",
                      "name",
                      "leadId"
                    ]
                  }
                },
                "providerThreadId": {
                  "$ref": "#/$defs/OpaqueId"
                },
                "provider": {
                  "type": "string",
                  "enum": [
                    "google_workspace",
                    "microsoft_365",
                    "other"
                  ]
                },
                "lastMessageAt": {
                  "anyOf": [
                    {
                      "$ref": "#/$defs/UtcDateTimeEncoded"
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "messageCount": {
                  "type": "integer",
                  "minimum": 0,
                  "maximum": 9007199254740991
                },
                "labels": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
                      "id": {
                        "$ref": "#/$defs/ThreadLabelId"
                      },
                      "name": {
                        "$ref": "#/$defs/ShortText"
                      },
                      "hexColor": {
                        "$ref": "#/$defs/ShortText"
                      },
                      "sentiment": {
                        "anyOf": [
                          {
                            "type": "string",
                            "enum": [
                              "positive",
                              "negative",
                              "neutral"
                            ]
                          },
                          {
                            "type": "null"
                          }
                        ]
                      },
                      "type": {
                        "type": "string",
                        "enum": [
                          "custom",
                          "default"
                        ]
                      }
                    },
                    "required": [
                      "id",
                      "name",
                      "hexColor",
                      "sentiment",
                      "type"
                    ],
                    "patternProperties": {
                      "^(?!(?:id|name|hexColor|sentiment|type)$)[\\s\\S]*$": false
                    },
                    "additionalProperties": true,
                    "propertyNames": {
                      "type": "string",
                      "enum": [
                        "id",
                        "name",
                        "hexColor",
                        "sentiment",
                        "type"
                      ]
                    }
                  }
                },
                "assignees": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
                      "userId": {
                        "type": "string",
                        "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
                        "format": "uuid"
                      },
                      "name": {
                        "anyOf": [
                          {
                            "$ref": "#/$defs/LeadStoredText"
                          },
                          {
                            "type": "null"
                          }
                        ]
                      },
                      "email": {
                        "$ref": "#/$defs/EmailAddress"
                      },
                      "image": {
                        "anyOf": [
                          {
                            "$ref": "#/$defs/HttpUrl"
                          },
                          {
                            "type": "null"
                          }
                        ]
                      },
                      "isFormerMember": {
                        "type": "boolean"
                      }
                    },
                    "required": [
                      "userId",
                      "name",
                      "email",
                      "image",
                      "isFormerMember"
                    ],
                    "patternProperties": {
                      "^(?!(?:userId|name|email|image|isFormerMember)$)[\\s\\S]*$": false
                    },
                    "additionalProperties": true,
                    "propertyNames": {
                      "type": "string",
                      "enum": [
                        "userId",
                        "name",
                        "email",
                        "image",
                        "isFormerMember"
                      ]
                    }
                  }
                },
                "campaignId": {
                  "anyOf": [
                    {
                      "type": "string",
                      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
                      "format": "uuid"
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "campaignContactId": {
                  "anyOf": [
                    {
                      "type": "string",
                      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
                      "format": "uuid"
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "isRead": {
                  "type": "boolean"
                },
                "starredAt": {
                  "anyOf": [
                    {
                      "$ref": "#/$defs/UtcDateTimeEncoded"
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "archivedAt": {
                  "anyOf": [
                    {
                      "$ref": "#/$defs/UtcDateTimeEncoded"
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "deletedAt": {
                  "anyOf": [
                    {
                      "$ref": "#/$defs/UtcDateTimeEncoded"
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "folders": {
                  "type": "array",
                  "items": {
                    "type": "string",
                    "enum": [
                      "inbox",
                      "sent",
                      "archived",
                      "starred",
                      "warmup",
                      "trash"
                    ]
                  }
                },
                "recentMessages": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "properties": {
                      "id": {
                        "type": "string",
                        "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
                        "format": "uuid"
                      },
                      "providerInternalMessageId": {
                        "$ref": "#/$defs/OpaqueId"
                      },
                      "from": {
                        "$ref": "#/$defs/NonEmptyString"
                      },
                      "to": {
                        "type": "array",
                        "items": {
                          "$ref": "#/$defs/NonEmptyString"
                        }
                      },
                      "cc": {
                        "type": "array",
                        "items": {
                          "$ref": "#/$defs/NonEmptyString"
                        }
                      },
                      "subject": {
                        "anyOf": [
                          {
                            "$ref": "#/$defs/LeadStoredText"
                          },
                          {
                            "type": "null"
                          }
                        ]
                      },
                      "snippet": {
                        "anyOf": [
                          {
                            "$ref": "#/$defs/LeadStoredText"
                          },
                          {
                            "type": "null"
                          }
                        ]
                      },
                      "receivedAt": {
                        "$ref": "#/$defs/UtcDateTimeEncoded"
                      },
                      "isRead": {
                        "type": "boolean"
                      },
                      "isFromInboxSender": {
                        "type": "boolean"
                      }
                    },
                    "required": [
                      "id",
                      "providerInternalMessageId",
                      "from",
                      "to",
                      "cc",
                      "subject",
                      "snippet",
                      "receivedAt",
                      "isRead",
                      "isFromInboxSender"
                    ],
                    "patternProperties": {
                      "^(?!(?:id|providerInternalMessageId|from|to|cc|subject|snippet|receivedAt|isRead|isFromInboxSender)$)[\\s\\S]*$": false
                    },
                    "additionalProperties": true,
                    "propertyNames": {
                      "type": "string",
                      "enum": [
                        "id",
                        "providerInternalMessageId",
                        "from",
                        "to",
                        "cc",
                        "subject",
                        "snippet",
                        "receivedAt",
                        "isRead",
                        "isFromInboxSender"
                      ]
                    }
                  },
                  "maxItems": 20
                }
              },
              "required": [
                "id",
                "inboxId",
                "organizationId",
                "subject",
                "snippet",
                "contact",
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                      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
                      "format": "uuid"
                    },
                    "inboxId": {
                      "anyOf": [
                        {
                          "type": "string",
                          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
                          "format": "uuid"
                        },
                        {
                          "type": "null"
                        }
                      ]
                    },
                    "organizationId": {
                      "type": "string",
                      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
                      "format": "uuid"
                    },
                    "providerInternalMessageId": {
                      "$ref": "#/$defs/OpaqueId"
                    },
                    "rfc2822MessageId": {
                      "anyOf": [
                        {
                          "$ref": "#/$defs/NonEmptyString"
                        },
                        {
                          "type": "null"
                        }
                      ]
                    },
                    "provider": {
                      "type": "string",
                      "enum": [
                        "google_workspace",
                        "microsoft_365",
                        "other"
                      ]
                    },
                    "from": {
                      "$ref": "#/$defs/NonEmptyString"
                    },
                    "to": {
                      "type": "array",
                      "items": {
                        "$ref": "#/$defs/NonEmptyString"
                      }
                    },
                    "cc": {
                      "type": "array",
                      "items": {
                        "$ref": "#/$defs/NonEmptyString"
                      }
                    },
                    "bcc": {
                      "type": "array",
                      "items": {
                        "$ref": "#/$defs/NonEmptyString"
                      }
                    },
                    "subject": {
                      "anyOf": [
                        {
                          "$ref": "#/$defs/LeadStoredText"
                        },
                        {
                          "type": "null"
                        }
                      ]
                    },
                    "snippet": {
                      "anyOf": [
                        {
                          "$ref": "#/$defs/LeadStoredText"
                        },
                        {
                          "type": "null"
                        }
                      ]
                    },
                    "receivedAt": {
                      "$ref": "#/$defs/UtcDateTimeEncoded"
                    },
                    "direction": {
                      "type": "string",
                      "enum": [
                        "inbound",
                        "outbound"
                      ]
                    },
                    "isFromInboxSender": {
                      "type": "boolean"
                    },
                    "sentFromUnibox": {
                      "type": "boolean"
                    },
                    "attachments": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "id": {
                            "$ref": "#/$defs/AttachmentId"
                          },
                          "filename": {
                            "$ref": "#/$defs/ShortText"
                          },
                          "contentType": {
                            "$ref": "#/$defs/ShortText"
                          },
                          "size": {
                            "type": "integer",
                            "minimum": 0,
                            "maximum": 9007199254740991
                          },
                          "inline": {
                            "type": "boolean"
                          }
                        },
                        "required": [
                          "id",
                          "filename",
                          "contentType",
                          "size",
                          "inline"
                        ],
                        "patternProperties": {
                          "^(?!(?:id|filename|contentType|size|inline)$)[\\s\\S]*$": false
                        },
                        "additionalProperties": true,
                        "propertyNames": {
                          "type": "string",
                          "enum": [
                            "id",
                            "filename",
                            "contentType",
                            "size",
                            "inline"
                          ]
                        }
                      }
                    },
                    "bodyState": {
                      "type": "string",
                      "enum": [
                        "available",
                        "pending"
                      ]
                    },
                    "isRead": {
                      "type": "boolean"
                    },
                    "flaggedAt": {
                      "anyOf": [
                        {
                          "$ref": "#/$defs/UtcDateTimeEncoded"
                        },
                        {
                          "type": "null"
                        }
                      ]
                    },
                    "deletedAt": {
                      "anyOf": [
                        {
                          "$ref": "#/$defs/UtcDateTimeEncoded"
                        },
                        {
                          "type": "null"
                        }
                      ]
                    },
                    "headers": {
                      "type": "object",
                      "additionalProperties": {
                        "type": "string",
                        "maxLength": 16384
                      }
                    },
                    "authoredByWorkflowRunId": {
                      "anyOf": [
                        {
                          "$ref": "#/$defs/OpaqueId"
                        },
                        {
                          "type": "null"
                        }
                      ]
                    }
                  },
                  "required": [
                    "id",
                    "threadId",
                    "inboxId",
                    "organizationId",
                    "providerInternalMessageId",
                    "rfc2822MessageId",
                    "provider",
                    "from",
                    "to",
                    "cc",
                    "bcc",
                    "subject",
                    "snippet",
                    "receivedAt",
                    "direction",
                    "isFromInboxSender",
                    "sentFromUnibox",
                    "attachments",
                    "bodyState",
                    "isRead",
                    "flaggedAt",
                    "deletedAt"
                  ],
                  "patternProperties": {
                    "^(?!(?:id|threadId|inboxId|organizationId|providerInternalMessageId|rfc2822MessageId|provider|from|to|cc|bcc|subject|snippet|receivedAt|direction|isFromInboxSender|sentFromUnibox|attachments|bodyState|isRead|flaggedAt|deletedAt|headers|authoredByWorkflowRunId)$)[\\s\\S]*$": false
                  },
                  "additionalProperties": true,
                  "propertyNames": {
                    "type": "string",
                    "enum": [
                      "id",
                      "threadId",
                      "inboxId",
                      "organizationId",
                      "providerInternalMessageId",
                      "rfc2822MessageId",
                      "provider",
                      "from",
                      "to",
                      "cc",
                      "bcc",
                      "subject",
                      "snippet",
                      "receivedAt",
                      "direction",
                      "isFromInboxSender",
                      "sentFromUnibox",
                      "attachments",
                      "bodyState",
                      "isRead",
                      "flaggedAt",
                      "deletedAt",
                      "headers",
                      "authoredByWorkflowRunId"
                    ]
                  }
                },
                {
                  "type": "object",
                  "properties": {
                    "items": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "threadId": {
                            "type": "string",
                            "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|[fF]{8}-[fF]{4}-[fF]{4}-[fF]{4}-[fF]{12})$",
                            "format": "uuid"
                          },
                          "ok": {
                            "type": "boolean"
                          },
                          "error": {
                            "anyOf": [
                              {
                                "$ref": "#/$defs/ShortText"
                              },
                              {
                                "type": "null"
                              }
                            ]
                          }
                        },
                        "required": [
                          "threadId",
                          "ok",
                          "error"
                        ],
                        "patternProperties": {
                          "^(?!(?:threadId|ok|error)$)[\\s\\S]*$": false
                        },
                        "additionalProperties": true,
                        "propertyNames": {
                          "type": "string",
                          "enum": [
                            "threadId",
                            "ok",
                            "error"
                          ]
                        }
                      },
                      "maxItems": 100
                    },
                    "succeeded": {
                      "type": "integer",
                      "minimum": 0,
                      "maximum": 9007199254740991
                    },
                    "failed": {
                      "type": "integer",
                      "minimum": 0,
                      "maximum": 9007199254740991
                    }
                  },
                  "required": [
                    "items",
                    "succeeded",
                    "failed"
                  ],
                  "patternProperties": {
                    "^(?!(?:items|succeeded|failed)$)[\\s\\S]*$": false
                  },
                  "additionalProperties": true,
                  "propertyNames": {
                    "type": "string",
                    "enum": [
                      "items",
                      "succeeded",
                      "failed"
                    ]
                  }
                }
              ]
            },
            {
              "not": {
                "type": "object"
              }
            }
          ]
        }
      },
      "required": [
        "data"
      ],
      "additionalProperties": false
    }
  ]
}
```

### Underlying API operations

- `uniboxThreads.delete`: `DELETE /v1/workspaces/:workspaceId/unibox/threads/:threadId`
- `uniboxThreads.batchDelete`: `POST /v1/workspaces/:workspaceId/unibox/threads/batch/delete`
- `uniboxMessages.delete`: `DELETE /v1/workspaces/:workspaceId/unibox/messages/:messageId`

