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Gmail Component

Manage Messages in Google's email service

Component key: google-gmail

Changelog ↓

Description​

Gmail is Google's email service. This component allows you to fetch and filter and manage messages, and send new messages from a Google Gmail account.

API Documentation​

This component was built using the Gmail API Documentation.

Documentation for the Node.js client used in this component can be found at https://googleapis.dev/nodejs/googleapis/latest/gmail/index.html

Most actions in this component have a Gmail User ID input. You can safely leave this input blank, and the default value, me will be used, indicating that the user who authenticated is the user whose Gmail account your integration will use.

Use labels to organize messages

Gmail uses labels in place of folders to organize messages. Messages in a user's inbox have a label of INBOX. You can apply custom labels to a message (so, you can loop only over messages with a particular label, etc).

Receiving notifications from Gmail​

Gmail supports push notifications to let you know when a new message arrives in a user's inbox. Behind the scenes, this uses Google Cloud Pub/Sub to deliver the notifications. In order to receive notifications when new messages are received, you will need to set up a Pub/Sub topic and subscription, and then configure Gmail to send notifications to that topic. The steps below will walk you through this process.

  1. Create a Google Cloud IAM service account from https://console.cloud.google.com/iam-admin/serviceaccounts and grant the service account the Pub/Sub Admin role. Ensure that this IAM role exists in the same project as your Gmail OAuth app (see OAuth 2.0 connection below).
  2. Generate a new key for the service account, and download the JSON file. Take note of the private_key, project_id and client_email values in the JSON file - these will be used for creating the Pub/Sub topic and subscription.
  3. Create a new Pub/Sub topic using the Google Cloud Pub/Sub component's Create Topic action.
  4. Create a new Pub/Sub subscription using the Google Cloud Pub/Sub component's Create Webhook Subscription action. Use the topic created in the previous step as the Topic Name input. For the webhook URL, choose a sibling flow of the webhook creation flow. The sibling flow will receive the webhook notifications.
  5. Use this component's Create Push Notification action. This will instruct Gmail to send notifications to the Pub/Sub topic created in step 3.

Some notes about the above steps:

  • Subscription and topic names need to be unique. You can use the current instance's ID (available from the trigger payload) as a unique identifier for the topic and subscription names.
  • The Pub/Sub topic and subscription must be created in the same project as the Gmail OAuth app.
  • Push notification watch requests expire after 7 days. You'll need to periodically refresh the watch request. You can do that by calling the setup flow from another flow on a schedule.

The examples repo has an example integration that you can import that demonstrates how to set up Gmail push notifications.

Example Integration

Connections​

Service Account​

In order to use the Service Account Authentication method for Gmail, you'll need to:

  1. Create a Service Account in the Google Cloud Platform (GCP) Console. This can be done here and then navigating to Service Accounts
  2. Once a Service Account is created, you will need to generate a Service Account Key This can be done by clicking on the Service Account's options, navigating to the Key tab, and clicking Add Key to create a new key.
  3. After creating the key, you will be able to download a JSON file that contains the key information. This key contains sensible data and should be used with caution.
  4. Use the key downloaded in the previous step as input for the Gmail 'Service Account' connection.
  5. Lastly, if needed, specify a granular scope, take into account that the connection defaults to the https://mail.google.com/ scope, which gives full access to the Gmail API on your behalf.
InputNotesExample
Service Account Key File

The Key File for your Google Service Account.

Scopes

Space delimited listing of scopes. See https://developers.google.com/gmail/api/auth/scopes

https://mail.google.com/
User

The Workspace User to impersonate.

support@yourcompany.com

OAuth2​

The Gmail component authenticates requests through the Google Cloud Platform (GCP) OAuth 2.0 service. You'll need to create a GCP OAuth 2.0 app so your integration can authenticate and perform Gmail tasks on your customers' behalf.

To create a Gmail OAuth 2.0 app, first make sure you have a Google Developer account - you can sign up at https://console.cloud.google.com/. Then:

  1. Open up the Gmail API console - https://console.cloud.google.com/marketplace/product/google/gmail.googleapis.com
  2. You will be prompted to enable Gmail API for your project. Click ENABLE.
  3. On the sidebar, select APIs & Services and then Credentials.
  4. An OAuth 2.0 app includes a "Consent Screen" (the page that asks "Do you want to allow (Your Company) to access Gmail on your behalf?"). Click CONFIGURE CONSENT SCREEN.
    1. Your app will be externally available to your customers, so choose a User Type of External.
    2. Fill out the OAuth consent screen with an app name (your company or product's name), support email, app logo, domain, etc.
    3. You can ignore domains for now.
    4. On the next page, add any scopes relevant to your integration, like https://www.googleapis.com/auth/gmail.readonly and https://www.googleapis.com/auth/gmail.send.
    5. Enter some test users for your testing purposes. Your app will only work for those testing users until it is "verified" by Google. When you are ready for verification (they verify your privacy policy statement, etc), click PUBLISH APP on the OAuth consent screen. That'll allow your customers to authorize your integration to access their Gmail account.
  5. Once your "Consent Screen" is configured open the Credentials page from the sidebar again.
  6. Click +CREATE CREDENTIALS and select OAuth Client ID.
    1. Under Application type select Web application.
    2. Under Authorized redirect URIs enter the OAuth 2.0 callback URL: https://oauth2.prismatic.io/callback.
    3. Click CREATE.
  7. Take note of the Client ID and Client Secret that are generated.
info

Make sure to publish your OAuth 2.0 app after you've tested it so users outside of your test users can authorize your integration to interact with Gmail on their behalf.

Now that you have a Client ID and Client Secret, add Gmail step to your workflow. Open the Configuration Wizard Designer by clicking Configuration Wizard, select your Gmail Connection and enter your client ID and secret.

A note on scopes

You can keep the default Gmail scope, https://mail.google.com/. This will grant you full permission over your users' Gmail accounts.

If you would like to limit permissions, you can select a subset of scopes, like https://www.googleapis.com/auth/gmail.readonly https://www.googleapis.com/auth/gmail.send.

InputNotesExample
Authorize URL

The Authorization URL for Gmail

https://accounts.google.com/o/oauth2/v2/auth?access_type=offline&prompt=consent
Client ID

Your Gmail app's Client ID

Client Secret

Your Gmail app's Client Secret

Scopes

Space delimited listing of scopes. See https://developers.google.com/gmail/api/auth/scopes

https://mail.google.com/
Token URL

The Token URL for Gmail

https://oauth2.googleapis.com/token

Triggers​

Push Notification Webhook​

Receive and validate webhook requests from Gmail for webhooks you configure. | key: pushNotificationWebhook

{
  "response": {
    "statusCode": 200,
    "contentType": "text/plain"
  },
  "payload": {
    "flow": {
      "id": "FLOW_ID",
      "name": "Flow 1"
    },
    "startedAt": "2023-06-16T19:37:52.276Z",
    "integration": {
      "id": "INTEGRATION_ID",
      "name": "Gmail",
      "externalVersion": "1.0.0",
      "versionSequenceId": "123456"
    },
    "headers": {
      "Accept": "application/json",
      "Accept-Encoding": "gzip, deflate, br",
      "Content-Type": "application/json",
      "From": "noreply@google.com",
      "Host": "hooks.example.com",
      "User-Agent": "APIs-Google; (+https://developers.google.com/webmasters/APIs-Google.html)",
      "X-Amz-Cf-Id": "IfJGfd1Y6gtJX9BTs37_GnMRnliiMaMCxQ6EMM6dD1rqE7hMK12345==",
      "X-Amzn-Trace-Id": "Root=1-648cba10-7ea5bdfd45f98ad327612345"
    },
    "queryParameters": null,
    "rawBody": {
      "data": {},
      "contentType": "application/json"
    },
    "body": {
      "data": {
        "message": {
          "data": "<Base64 encoded data>",
          "decodedData": {
            "emailAddress": "",
            "historyId": "123456"
          },
          "messageId": "8406082761012345",
          "message_id": "8406082761012345",
          "publishTime": "2023-06-16T19:37:52.276Z",
          "publish_time": "2023-06-16T19:37:52.276Z"
        },
        "subscription": "projects/projectname-123456/subscriptions/SubscriptionName"
      },
      "contentType": "application/json"
    },
    "pathFragment": "",
    "webhookUrls": {
      "Flow 1": "https://hooks.example.com/trigger/WEBHOOK_ID"
    },
    "webhookApiKeys": {
      "Flow 1": [
        "sample-api-key"
      ]
    },
    "invokeUrl": "https://hooks.example.com/trigger/WEBHOOK_ID",
    "executionId": "EXECUTION_ID",
    "customer": {
      "id": "testCustomerId",
      "name": "Test Customer",
      "externalId": "testCustomerExternalId"
    },
    "instance": {
      "id": "testInstanceId",
      "name": "Test Instance"
    },
    "user": {
      "id": "testUserId",
      "email": "testUserEmail@example.com",
      "name": "Test User",
      "externalId": "testUserExternalId"
    },
    "globalDebug": false
  }
}

Data Sources​

Select Label​

Select a label from the list of labels | key: selectLabel | type: picklist

InputNotesExample
Connection

The Connection to use for authorization.

Gmail User ID (optional)

A user whose account to query (defaults to currently authenticated user)

Select Message​

Select a message from the list of messages | key: selectMessage | type: picklist

InputNotesExample
Connection

The Connection to use for authorization.

Query String

Only return messages matching the specified query. Supports the same query format as the Gmail search box.

from:someuser@example.com rfc822msgid:<somemsgid@example.com> is:unread
Gmail User ID (optional)

A user whose account to query (defaults to currently authenticated user)

Actions​

Create Push Notification (Watch Request)​

Enables the ability to send update notifications like new messages received. | key: createPushNotification

InputNotesExample
Connection

The Connection to use for authorization.

Label ID

System labels typically correspond to pre-defined elements in the Gmail web interface such as the inbox.

INBOX
Topic Nameprojects/example-123456/topics/example-gmail
Gmail User ID (optional)

A user whose account to query (defaults to currently authenticated user)

Delete Push Notification (Stop Mailbox Updates)​

Calls a stop notification. | key: deletePushNotification

InputNotesExample
Connection

The Connection to use for authorization.

Gmail User ID (optional)

A user whose account to query (defaults to currently authenticated user)

Get Current User​

Get metadata about the authenticated user | key: getCurrentUser

InputNotesExample
Connection

The Connection to use for authorization.

{
  "data": {
    "emailAddress": "example@gmail.com",
    "historyId": "1234567",
    "messagesTotal": 12345,
    "threadsTotal": 12345
  }
}

Get Event History​

Fetch events that have occurred in the mailbox since the specified startHistoryId. | key: getEventHistory

InputNotesExample
Connection

The Connection to use for authorization.

History ID

The history ID to start history from.

Gmail User ID (optional)

A user whose account to query (defaults to currently authenticated user)

Get Label by Name​

Get a label (including ID) by its name | key: getLabelByName

InputNotesExample
Connection

The Connection to use for authorization.

Label Name
Gmail User ID (optional)

A user whose account to query (defaults to currently authenticated user)

Get Message​

Get a message by ID | key: getMessageById

InputNotesExample
Connection

The Connection to use for authorization.

Message ID1234abcd
Gmail User ID (optional)

A user whose account to query (defaults to currently authenticated user)

{
  "data": {
    "id": "1234abcd",
    "threadId": "5678efgh",
    "labelIds": [
      "IMPORTANT",
      "SENT",
      "INBOX"
    ],
    "message": {
      "headers": {
        "mime-version": "1.0",
        "date": "2022-09-19T20:09:01.000Z",
        "message-id": "<Test-message-id@mail.gmail.com>",
        "subject": "Test Message",
        "from": {
          "value": [
            {
              "address": "example@gmail.com",
              "name": "Example Example"
            }
          ],
          "html": "<span class=\"mp_address_group\"><span class=\"mp_address_name\">Example Example</span> &lt;<a href=\"mailto:example@gmail.com\" class=\"mp_address_email\">example@gmail.com</a>&gt;</span>",
          "text": "Example Example <example@gmail.com>"
        },
        "to": {
          "value": [
            {
              "address": "example@gmail.com",
              "name": "Example Example"
            }
          ],
          "html": "<span class=\"mp_address_group\"><span class=\"mp_address_name\">Example Example</span> &lt;<a href=\"mailto:example@gmail.com\" class=\"mp_address_email\">example@gmail.com</a>&gt;</span>",
          "text": "Example Example <example@gmail.com>"
        },
        "content-type": {
          "value": "multipart/mixed",
          "params": {
            "boundary": "000000000000680fa005e90d488f"
          }
        }
      },
      "attachments": [],
      "text": "Example email body",
      "html": "<div dir=\"ltr\">Example email body<div><br></div></div>\n"
    }
  }
}

List Labels​

List all labels within this account | key: listLabels

InputNotesExample
Connection

The Connection to use for authorization.

Gmail User ID (optional)

A user whose account to query (defaults to currently authenticated user)

List Messages​

Get a list of messages | key: listMessages

InputNotesExample
Add Metadata

Turn this On to add metadata to the messages. This will slow down the response time.

false
Connection

The Connection to use for authorization.

Fetch All

Turn this On to fetch all pages of results.

false
Labels

Show only messages with labels that match these label IDs

Max Results

The maximum number of results to return.

Page Token

If you're looping over pages of results, this is the page token from the result of the previous 'list messages' step.

Query String

Only return messages matching the specified query. Supports the same query format as the Gmail search box.

from:someuser@example.com rfc822msgid:<somemsgid@example.com> is:unread
Gmail User ID (optional)

A user whose account to query (defaults to currently authenticated user)

{
  "data": {
    "messages": [
      {
        "id": "abcd1234",
        "threadId": "efgh5678"
      }
    ]
  }
}

Raw Request​

Send raw HTTP request to Google Gmail | key: rawRequest

InputNotesExample
Connection

The Connection to use for authorization.

Data

The HTTP body payload to send to the URL.

{"exampleKey": "Example Data"}
Debug Request

Enabling this flag will log out the current request.

false
File Data

File Data to be sent as a multipart form upload.

[{key: "example.txt", value: "My File Contents"}]
File Data File Names

File names to apply to the file data inputs. Keys must match the file data keys above.

Form Data

The Form Data to be sent as a multipart form upload.

[{"key": "Example Key", "value": new Buffer("Hello World")}]
Header

A list of headers to send with the request.

User-Agent: curl/7.64.1
Max Retry Count

The maximum number of retries to attempt. Specify 0 for no retries.

0
Method

The HTTP method to use.

Query Parameter

A list of query parameters to send with the request. This is the portion at the end of the URL similar to ?key1=value1&key2=value2.

Response Type

The type of data you expect in the response. You can request json, text, or binary data.

json
Retry On All Errors

If true, retries on all erroneous responses regardless of type. This is helpful when retrying after HTTP 429 or other 3xx or 4xx errors. Otherwise, only retries on HTTP 5xx and network errors.

false
Retry Delay (ms)

The delay in milliseconds between retries. This is used when 'Use Exponential Backoff' is disabled.

0
Timeout

The maximum time that a client will await a response to its request

2000
URL

Input the path only (/v1/users/{userId}/messages), The base URL is already included (https://gmail.googleapis.com/gmail). For example, to connect to https://gmail.googleapis.com/gmail/v1/users/{userId}/messages, only /v1/users/{userId}/messages is entered in this field.

/v1/users/{userId}/messages
Use Exponential Backoff

Specifies whether to use a pre-defined exponential backoff strategy for retries. When enabled, 'Retry Delay (ms)' is ignored.

false

Send Message​

Send a new message | key: sendMessage

InputNotesExample
Attachments

Specify a file name as the key (i.e. 'my-file.pdf'), and the file as the value

BCC
CC
Connection

The Connection to use for authorization.

Dynamic Attachments

An array of objects with 'key' and 'value' properties, where 'key' is the file name and 'value' is the binary file data. Typically used as a reference from a previous step. Ex. [{key: "my-attachment.pdf", value: <BINARY FILE DATA TO ATTACH>},{key: "another-attachment.xlsx", value: <BINARY EXCEL FILE DATA>}]

[{key: "my-attachment.pdf", value: <BINARY FILE DATA TO ATTACH>},{key: "another-attachment.xlsx", value: <BINARY EXCEL FILE DATA>}]
From

Alias of the sender email address. This is the email address that will be used to send the email.

John Doe <john.doe@example.com>
HTML body

For email clients that support HTML

Subject
Plain text body

For email clients that do not support HTML

To
Gmail User ID (optional)

A user whose account to query (defaults to currently authenticated user)

Trash Message​

Send a message to the trash | key: trashMessageById

InputNotesExample
Connection

The Connection to use for authorization.

Message ID1234abcd
Gmail User ID (optional)

A user whose account to query (defaults to currently authenticated user)

Untrash Message​

Remove a message from the trash | key: unTrashMessageById

InputNotesExample
Connection

The Connection to use for authorization.

Message ID1234abcd
Gmail User ID (optional)

A user whose account to query (defaults to currently authenticated user)

Update Message Labels​

Add or remove labels from a message | key: updateLabels

InputNotesExample
Labels to Add

A list of labels to add (optional)

Connection

The Connection to use for authorization.

Message ID1234abcd
Labels to Remove

A list of labels to add (optional)

Gmail User ID (optional)

A user whose account to query (defaults to currently authenticated user)

Changelog​

2025-10-13​

Added subject impersonate user input option for enhanced email management capabilities.