Is the view and modify (https://www.googleapis.com/auth/gmail.modify) OAuth scope enough to get an email message using the Gmail API and display the whole content in an app?
Is the view and modify (https://www.googleapis.com/auth/gmail.modify) OAuth scope enough to get an email message using the Gmail API and display the whole content in an app?
The readonly scope is sufficient for your app instead of using the broader modify scope.
https://www.googleapis.com/auth/gmail.readonly
Please note that this is a Restricted scope and your app may need to pass through a security audit.