Using the Refresh Token for Gmail
This guide demonstrates how to leverage the refresh token obtained via Google OAuth to interact with the Gmail API.
Overview
After a user authorizes your application using Google OAuth, a refresh token is returned. This token can later be exchanged for an access token to perform actions using the Gmail API.
Steps
-
Request Offline Access
Ensure that your OAuth consent request includes the Gmail scopes and requests offline access. -
Exchange Refresh Token for a New Access Token
Use the refresh token to get a new access token by making a POST request. -
Access the Gmail API
Use the access token to make calls to the Gmail API for reading or sending emails.
Example Token Exchange Request
curl --request POST \
--url https://oauth2.googleapis.com/token \
--header 'Content-Type: application/x-www-form-urlencoded' \
--data 'client_id=YOUR_CLIENT_ID&client_secret=YOUR_CLIENT_SECRET&refresh_token=YOUR_REFRESH_TOKEN&grant_type=refresh_token'