Gmail 节点常见问题#

以下是 Gmail 节点的一些常见错误和问题，以及解决或排除它们的步骤。

从已发送消息中删除 n8n 属性#

If you're using the node to send a message or reply to a message, the node appends this statement to the end of the email:

This email was sent automatically with n8n

To remove this attribution:

In the node's Options section, select Add option.
Select Append n8n attribution.
Turn the toggle off.

Refer to Send options and Reply options for more information.

禁止访问 - 请检查您的凭证#

This error displays next to certain dropdowns in the node, like the Label Names or IDs dropdown. The full text looks something like this:

There was a problem loading the parameter options from server: "Forbidden - perhaps check your credentials?"

The error most often displays when you're using a Google Service Account as the credential and the credential doesn't have Impersonate a User turned on.

Refer to Google Service Account: Finish your n8n credential for more information.

401 未授权错误#

The full text of the error looks like this:

401 - {"error":"unauthorized_client","error_description":"Client is unauthorized to retrieve access tokens using this method, or client not authorized for any of the scopes requested."}

This error occurs when there's an issue with the credential you're using and its scopes or permissions.

To resolve:

For OAuth2 credentials, make sure you've enabled the Gmail API in APIs & Services > Library. Refer to Google OAuth2 Single Service - Enable APIs for more information.
For Service Account credentials:
1. Enable domain-wide delegation.
2. Make sure you add the Gmail API as part of the domain-wide delegation configuration.