Sending email from gmail api not received but shown in sent folder

I' m using gapi to send gmail. But if I send the mail to myself, it doesn't appear in my inbox. The most strange, it appears in the 'Sent' folder. `

function sendMessage(email, callback) {
    // Web-safe base64 
    var base64EncodedEmail = btoa(email).replace(/\//g,'_').replace(/\+/g,'-');
    var request = gapi.client.gmail.users.messages.send({
        'userId': 'me',
        'message': {
            'raw': base64EncodedEmail
        }
    });
    request.execute(callback);
}

function send() {
    var var to = 'znlswd@gmail.com',
        subject = 'Hello World',
        content = 'send a Gmail.'

    var email = "From: 'me'\r\n"+
        "To:  "+ to +"\r\n"+
        "Subject: "+subject+"\r\n"+
        "\r\n"+
        content;
    sendMessage(email, function () {
        console.log(arguments);
    });
}

` The information log in console is:

"[↵ {↵  "id": "gapiRpc",↵  "result": {↵   "id": "1471e09d88000bf7",↵   "threadId": "1471e09d88000bf7",↵   "labelIds": [↵    "SENT"↵   ]↵  }↵ }↵]↵"

And I can see this mail in the 'Sent' folder in Gmail, but I didn't get it in the inbox. The original of this mail in the 'Sent' folder is as follow:

Received: from 823618323534-124pu7sujfj5olv94rkr0apqdppc6nti.apps.googleusercontent.com
named unknown
by gmailapi.google.com
with HTTPREST;
Wed, 9 Jul 2014 19:11:07 -0700
From: znlswd@gmail.com
To:  znlswd@gmail.com
Subject: Hello World
Date: Wed, 9 Jul 2014 19:11:07 -0700
Message-Id: <CADOxe9KLTdYfcb8OxWz+rFSM4tVKuZcVV8HJ4byv95+qPA=+dw@mail.gmail.com>

send a Gmail.

Anybody knows why? Thanks very much!

Edit: I change the 'To:' in Mime message to another mailbox(not Gmail), and receive the mail correctly. Feeling More confused.

Edit: I add a 'Cc': field, It is : znlswd@gmail.com(myself), 71848140@qq.com, swdpal2014@gmail.com, ezdiary@163.com . All the other guys(Gmail and other mailboxs) received the mail, but I still couldn't receive the mail from myself.

The original mail I received in ezdiary@163.com is as follow:

Received: from mail-qg0-f44.google.com (unknown [209.85.192.44])
by mx42 (Coremail) with SMTP id XMCowEAJvlfC_L1TjzExBg--.81S3;
Thu, 10 Jul 2014 10:39:03 +0800 (CST)
Received: by mail-qg0-f44.google.com with SMTP id j107so7126918qga.31
    for <ezdiary@163.com>; Wed, 09 Jul 2014 19:38:57 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
    d=gmail.com; s=20120113;
    h=mime-version:from:date:message-id:subject:to:cc:content-type;
    bh=zgoFEkSzE1bUNp54umXlfaDEDw5bLf2Ei0uFrgrVZic=;
    b=UHOLwuTsFL9yajR0nn/TskbhVKrIfzX4OAsNDno4S2QIvwx83H5dOe2WMyFbL6Plmk
     n4z2qzGjturoi1411+PGpgj8rt4Y57aDQpu7tEOMolMmFLJomtCSmagHIHhc0qwU+CRL
     rTjO2ztwZoj/ejnqwcmANzgzMMnSxxkcIf3OvXhLm+j+5yHQvPhmGWIapFWJaTN+9gb9
     Q47Qkqe5dBrsxOnGhgQnr1orbE5NcLIYumZTH1YfCMZvqIjUtmviUQUKpfhNQD5UtCX0
     0J2moKK98Q5Vek4Wti/WtnEqOgNTzHkIL1M90eeAJKelyPu4TQ7G9GJxr1FX+s4WhgrM
     xTFA==
MIME-Version: 1.0
X-Received: by 10.224.137.9 with SMTP id u9mr78577439qat.24.1404959937414;
 Wed, 09 Jul 2014 19:38:57 -0700 (PDT)
Received: from 823618323534-124pu7sujfj5olv94rkr0apqdppc6nti.apps.googleusercontent.com
 named unknown by gmailapi.google.com with HTTPREST; Wed, 9 Jul 2014 19:38:56 -0700
From: znlswd@gmail.com
Date: Wed, 9 Jul 2014 19:38:56 -0700
Message-ID: <CADOxe9KF+VjMFw1bSkFd09RVsa7c7-pz9OguCFovOUemW4ZZbg@mail.gmail.com>
Subject: Hello World
To: znlswd@gmail.com
Cc: 71848140@qq.com, swdpal2014@gmail.com, ezdiary@163.com
Content-Type: text/plain; charset=UTF-8
X-CM-TRANSID:XMCowEAJvlfC_L1TjzExBg--.81S3
Authentication-Results: mx42; spf=pass smtp.mail=znlswd@gmail.com; dki
m=pass header.i=@gmail.com
X-Coremail-Antispam: 1Uf129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7v73
VFW2AGmfu7bjvjm3AaLaJ3UbIYCTnIWIevJa73UjIFyTuYvjxUSeT5DUUUU

send a Gmail.

Edit: the original mail in swdpal2014@gmail.com is as follow:

Delivered-To: swdpal2014@gmail.com
Received: by 10.194.121.101 with SMTP id lj5csp1399131wjb;
    Wed, 9 Jul 2014 19:38:58 -0700 (PDT)
Return-Path: <znlswd@gmail.com>
Received-SPF: pass (google.com: domain of znlswd@gmail.com designates 10.224.137.9 as     permitted sender) client-ip=10.224.137.9
Authentication-Results: mr.google.com;
   spf=pass (google.com: domain of znlswd@gmail.com designates 10.224.137.9 as             permitted sender) smtp.mail=znlswd@gmail.com;
   dkim=pass header.i=@gmail.com
X-Received: from mr.google.com ([10.224.137.9])
    by 10.224.137.9 with SMTP id u9mr68151154qat.24.1404959937949 (num_hops = 1);
    Wed, 09 Jul 2014 19:38:57 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
    d=gmail.com; s=20120113;
    h=mime-version:from:date:message-id:subject:to:cc:content-type;
    bh=zgoFEkSzE1bUNp54umXlfaDEDw5bLf2Ei0uFrgrVZic=;
    b=UHOLwuTsFL9yajR0nn/TskbhVKrIfzX4OAsNDno4S2QIvwx83H5dOe2WMyFbL6Plmk
     n4z2qzGjturoi1411+PGpgj8rt4Y57aDQpu7tEOMolMmFLJomtCSmagHIHhc0qwU+CRL
     rTjO2ztwZoj/ejnqwcmANzgzMMnSxxkcIf3OvXhLm+j+5yHQvPhmGWIapFWJaTN+9gb9
     Q47Qkqe5dBrsxOnGhgQnr1orbE5NcLIYumZTH1YfCMZvqIjUtmviUQUKpfhNQD5UtCX0
     0J2moKK98Q5Vek4Wti/WtnEqOgNTzHkIL1M90eeAJKelyPu4TQ7G9GJxr1FX+s4WhgrM
     xTFA==
MIME-Version: 1.0
X-Received: by 10.224.137.9 with SMTP id u9mr78577439qat.24.1404959937414;
 Wed, 09 Jul 2014 19:38:57 -0700 (PDT)
Received: from 823618323534-124pu7sujfj5olv94rkr0apqdppc6nti.apps.googleusercontent.com
 named unknown by gmailapi.google.com with HTTPREST; Wed, 9 Jul 2014 19:38:56 -0700
From: znlswd@gmail.com
Date: Wed, 9 Jul 2014 19:38:56 -0700
Message-ID: <CADOxe9KF+VjMFw1bSkFd09RVsa7c7-pz9OguCFovOUemW4ZZbg@mail.gmail.com>
Subject: Hello World
To: znlswd@gmail.com
Cc: 71848140@qq.com, swdpal2014@gmail.com, ezdiary@163.com
Content-Type: text/plain; charset=UTF-8

send a Gmail.

So to be clear, sending mail works as it sends correctly to others. In the case of sending mail to yourself (why exactly are you doing this? is this really needed as opposed to say just using messages.insert?) then it appears in only SENT but not also INBOX label. You only get one copy of the mail, that's the same irregardless of API or using web UI. The problem is that the web UI also puts that message in INBOX as well as SENT. (As you can tell, sending to yourself is a bit of a special case due to things like dupe-detection based on the Message-Id header, etc.)

Answer the question myself. First I tried using messages.insert. However, if I set the 'From' the same as the 'To'(my email address), the mail will still only be in the 'SENT' folder. the right way is using the message.modify api to add 'INBOX' and 'UNREAD' label to the mail sent.

gapi.client.request({
     path: "gmail/v1/users/me/messages/" + messageid + "/modify",
     method: "POST",
     body: "{\"addLabelIds\": [\"UNREAD\",\"INBOX\"]}",
     callback: function() {
         console.log("gmail sent to self");
         return console.log(arguments);
     }
})

The 'messageid' refer to the id return by the send api.

An untested idea: you can try adding an X-Gmail-Labels: Inbox header to the messages.send REST call in hopes that Gmail will add the label. I saw this header when doing a Google Takeout of some labels in GMail to mbox files.

来源：https://stackoverflow.com/questions/24666489/sending-email-from-gmail-api-not-received-but-shown-in-sent-folder

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