can i pass the email and password in the url of dropbox to automatically login to the dropbox

santosh111 Dropbox does offer an API you can use for programmatically uploading and downloading files. You can find everything you need to get started with the Dropbox API, including documentation, tutorials, and SDKs here:

https://www.dropbox.com/developers

For example, to download files:

https://www.dropbox.com/developers/documentation/http/documentation#files-download

And to upload files:

https://www.dropbox.com/developers/documentation/http/documentation#files-upload

These API calls require an access token for the account(s) that you want to connect to. You can't use the username and password directly.

Users use their account username and password to log in to the Dropbox web site to authorize access to your app. This way, your app never has to handle the user credentials directly. This is done via the OAuth flow:

https://www.dropbox.com/developers/reference/oauth-guide

The result is an access token that your app can store and re-use without further manual user intervention.