Android Gmail API get message 403 error

Question

I have error when implement Gmail API for Android. My Scopes:

private static final String[] SCOPES = { GmailScopes.GMAIL_LABELS, GmailScopes.GMAIL_COMPOSE,
            GmailScopes.GMAIL_INSERT, GmailScopes.GMAIL_MODIFY, GmailScopes.GMAIL_READONLY, GmailScopes.MAIL_GOOGLE_COM };

I can to get messages Id:

Log.i("messages.get(0)", messages.get(0).toPrettyString());

In Android Monitor:

I/messages.get(0): {"id": "1588ae7e991a62f2","threadId" : "1588ae7e991a62f2"}

But when I try to get certain message:

getGmailMessage(mService, user, "1588ae7e991a62f2");

public static Message getGmailMessage(Gmail service, String userId, String messageId) throws IOException {
    Message message = service.users().messages().get(userId, messageId).execute();
    System.out.println("Message snippet: " + message.getSnippet());
    System.out.println("Message getHeaders: " + message.getPayload().getHeaders().get(0));
    System.out.println("Message toPrettyString: " + message.getPayload().toPrettyString());
    return message;
}

I get an error:

The following error occurred: 403 Forbidden { "code" : 403, "errors" : [ { "domain" : "global", "message" : "Metadata scope doesn't allow format FULL", "reason" : "forbidden" } ], "message" : "Metadata scope doesn't allow format FULL" }

When I run my code in a new project, everything works. Why?

Still 403, but when I run my code in a new project, everything works. — Sartakov Dmitrij
According to this gmail forum, clearing your cache usually resolves this issue. Must be the reason your new projects works. — noogui

Mayank Beri Mayank Beri · Accepted Answer · 2017-08-29T05:06:30

you should remove the "metadata" scope.

check app permissions to make sure you have only these 3 scopes:

https://mail.google.com/
gmail.modify
readonly

, or else remove the permissions and add them again.

Android Gmail API get message 403 error

2 Answers