For a list of methods for this resource, see the end of this page.

Resource representations

An email message.

  "id": string,
  "threadId": string,
  "labelIds": [
  "snippet": string,
  "historyId": unsigned long,
  "internalDate": long,
  "payload": {
    "partId": string,
    "mimeType": string,
    "filename": string,
    "headers": [
        "name": string,
        "value": string
    "body": users.messages.attachments Resource,
    "parts": [
  "sizeEstimate": integer,
  "raw": bytes
Property name Value Description Notes
historyId unsigned long The ID of the last history record that modified this message.
id string The immutable ID of the message.
internalDate long The internal message creation timestamp (epoch ms), which determines ordering in the inbox. For normal SMTP-received email, this represents the time the message was originally accepted by Google, which is more reliable than the Date header. However, for API-migrated mail, it can be configured by client to be based on the Date header.
labelIds[] list List of IDs of labels applied to this message. writable
payload nested object The parsed email structure in the message parts.
payload.body nested object The message part body for this part, which may be empty for container MIME message parts.
payload.filename string The filename of the attachment. Only present if this message part represents an attachment.
payload.headers[] list List of headers on this message part. For the top-level message part, representing the entire message payload, it will contain the standard RFC 2822 email headers such as To, From, and Subject.
payload.headers[].name string The name of the header before the : separator. For example, To.
payload.headers[].value string The value of the header after the : separator. For example,
payload.mimeType string The MIME type of the message part.
payload.partId string The immutable ID of the message part.[] list The child MIME message parts of this part. This only applies to container MIME message parts, for example multipart/*. For non- container MIME message part types, such as text/plain, this field is empty. For more information, see RFC 1521.
raw bytes The entire email message in an RFC 2822 formatted and base64url encoded string. Returned in messages.get and drafts.get responses when the format=RAW parameter is supplied. writable
sizeEstimate integer Estimated size in bytes of the message.
snippet string A short part of the message text.
threadId string The ID of the thread the message belongs to. To add a message or draft to a thread, the following criteria must be met:
  1. The requested threadId must be specified on the Message or Draft.Message you supply with your request.
  2. The References and In-Reply-To headers must be set in compliance with the RFC 2822 standard.
  3. The Subject headers must match.


Deletes many messages by message ID. Provides no guarantees that messages were not already deleted or even existed at all.
Modifies the labels on the specified messages.
Immediately and permanently deletes the specified message. This operation cannot be undone. Prefer messages.trash instead.
Gets the specified message.
Imports a message into only this user's mailbox, with standard email delivery scanning and classification similar to receiving via SMTP. Does not send a message.
Directly inserts a message into only this user's mailbox similar to IMAP APPEND, bypassing most scanning and classification. Does not send a message.
Lists the messages in the user's mailbox.
Modifies the labels on the specified message.
Sends the specified message to the recipients in the To, Cc, and Bcc headers.
Moves the specified message to the trash.
Removes the specified message from the trash.

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