Vfrdtyky

I have followed gmail api for sending email. I am getting error as:

"message": "400 - "{n \"error\": {n \"errors\": [n {n \"domain\": \"global\",n \"reason\": \"invalidArgument\",n \"message\": \"'raw' RFC822 payload message string or uploading message via /upload/* URL required\"n }n ],n \"code\": 400,n \"message\": \"'raw' RFC822 payload message string or uploading message via /upload/* URL required\"n }n}n""

Here is the piece of code I have written for sending mail using gmail api with node.js. Help me out to resolve the issue.

router.post('/composeMail', async (req, res, next) => {

    function makeBody(to, from, subject, message) {

        let str = ["Content-Type: text/plain; charset="UTF-8"n",

            "Content-length: 5000n",

            "Content-Transfer-Encoding: message/rfc822n",

            "to: ", to,"n",

            "from: ", from,"n",

            "subject: ", subject,"nn",

            message

        ].join('');

        console.log("String: ", str);

        // let encodedMail = new Buffer(str).toString("base64").replace(/+/g, '-').replace(///g, '_');

        let encodedMail = btoa(str).replace(/+/g, '-').replace(///g, '_');

        return encodedMail;

    }

    let raw = makeBody("dinesh.kumar@gmail.com", "dinesh.kumar@gmail.com", "Test mail", "Everything is fine");

    let obj = {};

    obj.raw = raw;

    let body = JSON.stringify(obj);

    let option = {

        url: "https://www.googleapis.com/gmail/v1/users/userId/messages/send",

        method: 'POST',

        headers: {

            'Authorization': `Bearer ${req.query.access_token}`

        },

        qs: {

            userId: 'me'

        },

        body: body

    };



    await request(option).then(body => {

        return res.apiOk(body);

    }).catch(err => {

        return res.apiError(err);

    })

});

• You want to send an email using Gmail API by the request module.

If my understanding is correct, how about this modification? I think that there are several answers. So please think of this as one of them.

Modification points:

• Please use https://www.googleapis.com/upload/gmail/v1/users/userId/messages/send as the endpoint.


• Use the value as a string.


• Add 'Content-Type': 'message/rfc822' to the headers.

Modified script:

Please modify makeBody() as follows.

function makeBody(to, from, subject, message) {

    let str = [

        "to: ", to, "n",

        "from: ", from, "n",

        "subject: ", subject, "nn",

        message,

    ].join('');

    return str;

}

Please modify option as follows.

let raw = makeBody("dinesh.kumar@gmail.com", "dinesh.kumar@gmail.com", "Test mail", "Everything is fine");

const userId = 'me'; // Please modify this for your situation.

let option = {

    url: "https://www.googleapis.com/upload/gmail/v1/users/" + userId + "/messages/send",

    method: 'POST',

    headers: {

        'Authorization': `Bearer ${req.query.access_token}`,

        'Content-Type': 'message/rfc822',

    },

    body: raw,

};

Note:

• This modified script supposes that Gmail API is enabled at API console and the required scope for sending emails is included in the scopes of access token.

Reference:

• Users.messages: send

In my environment, I could confirm that this modified script worked fine. But if this was not what you want, I'm sorry.