Send Mail API

This API helps in authorizing the application by using Oauth2.0 and after authorization you can send email from your account on behalf of this API.

Setting up the API on your local machine:

1. Clone or Download the project
2. Setup the project and run command "npm start"

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Using the API :

1. Go to localhost:8000/ and follow the on screen instructions.

Working of the API:

There are three API endpoints in this Application

1. localhost:8000/ this is just a welcome screen for this application
2. localhost:8000/login this is the endpoint used for Auth
3. localhost:8000/credentials this is the api endpoint used in the process of authorization.
4. localhost:8000/sendmail this is the endpoint to send a brebuilt mail to a sender which is predefined in the code ,follow the code comments to change reciever's email.

Internal working of OAuth2.0

When you go to localhost:8000/login , this api endpoint will redirect you to the google authorization server after you authorize the application google server will send us a AuthToken (with the help of localhost:8000/credentials) this auth token is then used to exchange with AccessToken once we get the accesstoken we call the gmail API to send mail