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To use GmailLoader you must install the extra dependencies with pip install --upgrade embedchain[gmail]. The source must be a valid Gmail search query, you can refer https://support.google.com/mail/answer/7190?hl=en to build a query. To load Gmail messages, you MUST use the data_type as gmail. Otherwise the source will be detected as simple text. To use this you need to save credentials.json in the directory from where you will run the loader. Follow these steps to get the credentials
  1. Go to the Google Cloud Console.
  2. Create a project if you don’t have one already.
  3. Create an OAuth Consent Screen in the project. You may need to select the external option.
  4. Make sure the consent screen is published.
  5. Enable the Gmail API
  6. Create credentials from the Credentials tab.
  7. Select the type OAuth Client ID.
  8. Choose the application type Web application. As a name you can choose embedchain or any other name as per your use case.
  9. Add an authorized redirect URI for http://localhost:8080/.
  10. You can leave everything else at default, finish the creation.
  11. When you are done, a modal opens where you can download the details in json format.
  12. Put the .json file in your current directory and rename it to credentials.json
from embedchain import App

app = App()

gmail_filter = "to: me label:inbox"
app.add(gmail_filter, data_type="gmail")
app.query("Summarize my email conversations")