Creating Draft via Google Gmail API

Creating draft via Google Gmail API

I had the same issue when I was trying to do this for the first time as well. The solution that I found was to not include the message information as part of the parameters, but rather pass that on in the :body_object as shown below.

@result = client.execute(
  :api_method => gmail.users.drafts.create,
  :parameters => {
    'userId' => "me"      
  },
  :body_object => {
    'message' => {
      'raw' =>  Base64.urlsafe_encode64('Test Email Message')
    }
  }
)

Create email with Gmail API

How to send an email based on a draft with the Gmail API

This is one approach you could take:

Using users.draft list

{
  "drafts": [
    {
      "id": "r-1561xxx",
      "message": {
        "id": "179891xxx",
        "threadId": "179891xxx"
      }
    }
  ],
  "resultSizeEstimate": 1
}

Then users.draft get with one of the id in the previous request:

You can retrieve the current MIME message contained in the draft by calling drafts.get with the parameter format=raw.

(The data is sanitized)

{
  "id": "r-1561xxx",
  "message": {
    "id": "179891xxx",
    "threadId": "179891xxx",
    "labelIds": [
      "DRAFT"
    ],
    "snippet": "Name: Reason: Company:",
    "sizeEstimate": 635,
    "raw": "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",
    "historyId": "67xxx",
    "internalDate": "1628xxx"
  }
}

The raw attribute is where the message is. It's encoded in base64. Decoded it looks like this:

MIME-Version: 1.0
Date: Fri, 13 Aug 2021 16:12:09 +0200
Message-ID: <CAFdukbnrdxQxxxx@mail.gmail.com>
Subject: draft1
From: Sender <sample@gmail.com>
To: Receiver <sample@gmail.com>
Content-Type: multipart/alternative; boundary="000000000000eb4b5805c9716fd2"

--000000000000eb4b5805c9716fd2
Content-Type: text/plain; charset="UTF-8"

Name:

Reason:

Company:

--000000000000eb4b5805c9716fd2
Content-Type: text/html; charset="UTF-8"

<div dir="ltr">Name:<div><br></div><div>Reason:</div><div><br></div><div>Company:</div></div>

--000000000000eb4b5805c9716fd2--

Sending

In the guide it says:

Create the email content in some convenient way and encode it as a base64url string.
Create a new message resource and set its raw property to the base64url string you just created.

The text should conform to the rfc2822.

So make a plain text email like this (some field you can omit, like date and message ID):

MIME-Version: 1.0
Subject: draft1
From: Sender <sample@gmail.com>
To: Receiver <sample@gmail.com>
Content-Type: multipart/alternative; boundary="000000000000eb4b5805c9716fd2"

--000000000000eb4b5805c9716fd2
Content-Type: text/plain; charset="UTF-8"

Name: TooNetCreation

Reason: TooNetCreation

Company: TooNetCreation

--000000000000eb4b5805c9716fd2
Content-Type: text/html; charset="UTF-8"

<div dir="ltr">Name: TooNetCreation<div><br></div><div>Reason: TooNetCreation</div><div><br></div><div>Company: TooNetCreation</div></div>

--000000000000eb4b5805c9716fd2--

Which encodes to:

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

Which you can send with:

curl --request POST \
  'https://gmail.googleapis.com/gmail/v1/users/me/messages/send?key=[YOUR_API_KEY]' \
  --header 'Authorization: Bearer [YOUR_ACCESS_TOKEN]' \
  --header 'Accept: application/json' \
  --header 'Content-Type: application/json' \
  --data '{"raw":"TUlNRS1WZXJzaW9uOiAxLjAKU3ViamVjdDogZHJhZnQxCkZyb206IFNlbmRlciA8c2FtcGxlQGdtYWlsLmNvbT4KVG86IFJlY2VpdmVyIDxzYW1wbGVAZ21haWwuY29tPgpDb250ZW50LVR5cGU6IG11bHRpcGFydC9hbHRlcm5hdGl2ZTsgYm91bmRhcnk9IjAwMDAwMDAwMDAwMGViNGI1ODA1Yzk3MTZmZDIiCgotLTAwMDAwMDAwMDAwMGViNGI1ODA1Yzk3MTZmZDIKQ29udGVudC1UeXBlOiB0ZXh0L3BsYWluOyBjaGFyc2V0PSJVVEYtOCIKCk5hbWU6IFRvb05ldENyZWF0aW9uCgpSZWFzb246IFRvb05ldENyZWF0aW9uCgpDb21wYW55OiBUb29OZXRDcmVhdGlvbgoKLS0wMDAwMDAwMDAwMDBlYjRiNTgwNWM5NzE2ZmQyCkNvbnRlbnQtVHlwZTogdGV4dC9odG1sOyBjaGFyc2V0PSJVVEYtOCIKCjxkaXYgZGlyPSJsdHIiPk5hbWU6IFRvb05ldENyZWF0aW9uPGRpdj48YnI+PC9kaXY+PGRpdj5SZWFzb246IFRvb05ldENyZWF0aW9uPC9kaXY+PGRpdj48YnI+PC9kaXY+PGRpdj5Db21wYW55OiBUb29OZXRDcmVhdGlvbjwvZGl2PjwvZGl2PgoKLS0wMDAwMDAwMDAwMDBlYjRiNTgwNWM5NzE2ZmQyLS0="}' \
  --compressed

After which it should return an instance of the message and you will have send an email!

References

• users.draft list
• users.draft get
• users.messages send
• Sending email guide
  Working with drafts guide

How to create draft message with attachment using gmail API in Node.JS?

After some research, I found a solution to attach an image while create a draft using Gmail API, I got the hint from this source Sending mail with attachment

This is the complete working example:

Step 1:

function makeBody(subject, message, receiverId) {
    var boundary = "__myapp__";
    var nl = "\n";
    var attach = new Buffer(fs.readFileSync(__dirname + "/../" + fileName)).toString("base64");
    // console.dir(attach);
    var str = [

        "MIME-Version: 1.0",
        "Content-Transfer-Encoding: 7bit",
        "to: " + receiverId,
        "subject: " + subject,
        "Content-Type: multipart/alternate; boundary=" + boundary + nl,
        "--" + boundary,
        "Content-Type: text/plain; charset=UTF-8",
        "Content-Transfer-Encoding: 7bit" + nl,
        message + nl,
        "--" + boundary,
        "--" + boundary,
        "Content-Type: Application/pdf; name=myPdf.pdf",
        'Content-Disposition: attachment; filename=myPdf.pdf',
        "Content-Transfer-Encoding: base64" + nl,
        attach,
        "--" + boundary + "--"

    ].join("\n");

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

Step 2:

---

const auth = await authorize(accessToken);
const gmail = google.gmail({
    version: 'v1',
    auth
});
var rawText = makeBody("This is subject", "This is message", "test@gmail.com");
var res = await gmail.users.drafts.create({
    'userId': 'me',
    'resource': {
        'message': {
            'raw': rawText
        }
    }
});

Also can use this npm package mimemessage

How to open a draft created with Gmail API in browser?

The way to make this url changed, now it works like this:

mail.google.com/mail/#inbox?compose=draft.message.id

If you list your drafts you get

{
  "drafts": [
    {
      "id": "r5632827412362757569",
      "message": {
        "id": "174f4fa0dd96af123",
        "threadId": "174f4f59344d6321"
      }
    }
  ],
  ...
}

So, to open this draft you need the following url :

mail.google.com/mail/#inbox?compose=174f4fa0dd96af123

Gmail Api Create Draft Reply

Thank you all for the comments you left. You were all right on different points.

The problem was that I was using a slightly different example to the one on the Docs page.

I found the code here worked: https://developers.google.com/gmail/api/guides/drafts

It can be used like so:

msg = create_message('YOU@gmail.com','THEM@company.com','Re: Some Subject','This is a test')

create_draft(service,'me',  msg)

Create a draft with PDF file as attachment using Gmail API in Java

Try something similar to this:

private MimeMessage createEmailWithAttachment(String to,
        String subject,
        String bodyText,
        File file) throws MessagingException, IOException {
    Properties props = new Properties();
    Session session = Session.getDefaultInstance(props, null);

    MimeMessage email = new MimeMessage(session);

    email.addRecipient(javax.mail.Message.RecipientType.TO, new InternetAddress(to));
    email.setSubject(subject);

    MimeBodyPart mimeBodyPart = new MimeBodyPart();
    mimeBodyPart.setContent(bodyText, "text/plain");

    Multipart multipart = new MimeMultipart();
    multipart.addBodyPart(mimeBodyPart);

    mimeBodyPart = new MimeBodyPart();
    DataSource source = new FileDataSource(file);

    mimeBodyPart.setDataHandler(new DataHandler(source));
    mimeBodyPart.setFileName(file.getName());

    multipart.addBodyPart(mimeBodyPart);
    email.setContent(multipart);

    return email;
}

---

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