> ## Documentation Index
> Fetch the complete documentation index at: https://agentmail.manicule.dev/llms.txt
> Use this file to discover all available pages before exploring further.
> For every page in one file, fetch https://agentmail.manicule.dev/llms-full.txt (large).
> To search and read these docs as tools, connect the MCP server at https://agentmail.manicule.dev/api/mcp.
> Every agent surface: https://agentmail.manicule.dev/.well-known/llms-manifest.json

# Get Message (/api-reference/get-message)

<!-- agent-signals: reading_time_min: 4 · est_tokens: 2518 · updated: 2026-09-29 -->
Related: [Sign Up](/api-reference/sign-up.md), [Attach Human](/api-reference/attach-human.md), [Verify](/api-reference/verify.md), [List Inboxes](/api-reference/list-inboxes.md), [Create Inbox](/api-reference/create-inbox.md), [Search Inboxes](/api-reference/search-inboxes.md)

# Get Message

`GET /v0/inboxes/{inbox_id}/messages/{message_id}`

> **CLI:**
> ```bash
> agentmail inboxes messages get --inbox-id <inbox_id> --message-id <message_id>
> ```

Base URL: `https://api.agentmail.to`

Base URL: `https://x402.api.agentmail.to`

Base URL: `https://mpp.api.agentmail.to`

Base URL: `https://api.agentmail.eu`

## OpenAPI

```json
{
  "servers": [
    {
      "url": "https://api.agentmail.to",
      "description": "prod"
    },
    {
      "url": "https://x402.api.agentmail.to",
      "description": "prod-x402"
    },
    {
      "url": "https://mpp.api.agentmail.to",
      "description": "prod-mpp"
    },
    {
      "url": "https://api.agentmail.eu",
      "description": "eu-prod"
    }
  ],
  "security": [
    {
      "Bearer": []
    }
  ],
  "securitySchemes": {
    "Bearer": {
      "type": "http",
      "scheme": "bearer"
    }
  },
  "parameters": [
    {
      "name": "inbox_id",
      "in": "path",
      "required": true,
      "schema": {
        "type": "string",
        "description": "The ID of the inbox.",
        "title": "InboxId"
      }
    },
    {
      "name": "message_id",
      "in": "path",
      "required": true,
      "schema": {
        "type": "string",
        "description": "ID of message.",
        "title": "MessageId"
      }
    }
  ],
  "responses": {
    "200": {
      "description": "Response with status 200",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "inbox_id": {
                "type": "string",
                "description": "The ID of the inbox.",
                "title": "InboxId"
              },
              "thread_id": {
                "type": "string",
                "description": "ID of thread.",
                "title": "ThreadId"
              },
              "message_id": {
                "type": "string",
                "description": "ID of message.",
                "title": "MessageId"
              },
              "labels": {
                "type": "array",
                "items": {
                  "type": "string"
                },
                "description": "Labels of message.",
                "title": "MessageLabels"
              },
              "timestamp": {
                "type": "string",
                "format": "date-time",
                "description": "Time at which message was sent or drafted.",
                "title": "MessageTimestamp"
              },
              "from": {
                "type": "string",
                "description": "Address of sender. In format `username@domain.com` or `Display Name <username@domain.com>`.",
                "title": "MessageFrom"
              },
              "reply_to": {
                "type": "array",
                "items": {
                  "type": "string"
                },
                "description": "Reply-to addresses. In format `username@domain.com` or `Display Name <username@domain.com>`."
              },
              "to": {
                "type": "array",
                "items": {
                  "type": "string"
                },
                "description": "Addresses of recipients. In format `username@domain.com` or `Display Name <username@domain.com>`.",
                "title": "MessageTo"
              },
              "cc": {
                "type": "array",
                "items": {
                  "type": "string"
                },
                "description": "Addresses of CC recipients. In format `username@domain.com` or `Display Name <username@domain.com>`.",
                "title": "MessageCc"
              },
              "bcc": {
                "type": "array",
                "items": {
                  "type": "string"
                },
                "description": "Addresses of BCC recipients. In format `username@domain.com` or `Display Name <username@domain.com>`.",
                "title": "MessageBcc"
              },
              "subject": {
                "type": "string",
                "description": "Subject of message.",
                "title": "MessageSubject"
              },
              "preview": {
                "type": "string",
                "description": "Text preview of message.",
                "title": "MessagePreview"
              },
              "text": {
                "type": "string",
                "description": "Plain text body of message.",
                "title": "MessageText"
              },
              "html": {
                "type": "string",
                "description": "HTML body of message.",
                "title": "MessageHtml"
              },
              "extracted_text": {
                "type": "string",
                "description": "Extracted new text content."
              },
              "extracted_html": {
                "type": "string",
                "description": "Extracted new HTML content."
              },
              "attachments": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "attachment_id": {
                      "type": "string",
                      "description": "ID of attachment.",
                      "title": "AttachmentId"
                    },
                    "filename": {
                      "type": "string",
                      "description": "Filename of attachment.",
                      "title": "AttachmentFilename"
                    },
                    "size": {
                      "type": "integer",
                      "description": "Size of attachment in bytes.",
                      "title": "AttachmentSize"
                    },
                    "content_type": {
                      "type": "string",
                      "description": "Content type of attachment.",
                      "title": "AttachmentContentType"
                    },
                    "content_disposition": {
                      "type": "string",
                      "enum": [
                        "inline",
                        "attachment"
                      ],
                      "description": "Content disposition of attachment.",
                      "title": "AttachmentContentDisposition"
                    },
                    "content_id": {
                      "type": "string",
                      "description": "Content ID of attachment.",
                      "title": "AttachmentContentId"
                    }
                  },
                  "required": [
                    "attachment_id",
                    "size"
                  ],
                  "title": "Attachment"
                },
                "description": "Attachments in message.",
                "title": "MessageAttachments"
              },
              "in_reply_to": {
                "type": "string",
                "description": "ID of message being replied to.",
                "title": "MessageInReplyTo"
              },
              "references": {
                "type": "array",
                "items": {
                  "type": "string"
                },
                "description": "IDs of previous messages in thread.",
                "title": "MessageReferences"
              },
              "headers": {
                "type": "object",
                "additionalProperties": {
                  "type": "string"
                },
                "description": "Headers in message.",
                "title": "MessageHeaders"
              },
              "size": {
                "type": "integer",
                "description": "Size of message in bytes.",
                "title": "MessageSize"
              },
              "updated_at": {
                "type": "string",
                "format": "date-time",
                "description": "Time at which message was last updated.",
                "title": "MessageUpdatedAt"
              },
              "created_at": {
                "type": "string",
                "format": "date-time",
                "description": "Time at which message was created.",
                "title": "MessageCreatedAt"
              }
            },
            "required": [
              "inbox_id",
              "thread_id",
              "message_id",
              "labels",
              "timestamp",
              "from",
              "to",
              "size",
              "updated_at",
              "created_at"
            ],
            "title": "Message"
          }
        }
      }
    },
    "404": {
      "description": "Error response with status 404",
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "name": {
                "type": "string",
                "description": "Name of error.",
                "title": "ErrorName"
              },
              "code": {
                "type": "string",
                "description": "Stable, machine-readable error code in snake_case (for example, not_found or missing_permission). Branch on this rather than the message text.",
                "title": "ErrorCode"
              },
              "message": {
                "type": "string",
                "description": "Error message.",
                "title": "ErrorMessage"
              },
              "fix": {
                "type": "string",
                "description": "The concrete next action that resolves the error.",
                "title": "ErrorFix"
              },
              "docs": {
                "type": "string",
                "description": "Link to the error reference entry for this code.",
                "title": "ErrorDocs"
              }
            },
            "required": [
              "name",
              "message"
            ],
            "title": "ErrorResponse"
          }
        }
      }
    }
  }
}
```