Java

Send GMail using REST API

See more GMail REST API Examples

Demonstrates how to send an email using the GMail REST API. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Email;
import com.chilkatsoft.chilkat2.Http;
import com.chilkatsoft.chilkat2.HttpResponse;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        // Use the Chilkat Email API to create or load an email.
        Email email = new Email();

        // The From name/address don't need to be specified.
        // GMail will automatically use your Gmail address if the following 2 lines are omitted.
        email.setFromName("My Name");
        email.setFromAddress("my_account_name@gmail.com");

        email.addTo("John Smith", "somebody@somewhere.com");
        // To add more recipients, make additional calls to AddTo or AddCC, one per recipient...

        email.setSubject("This is a test GMail email created using Chilkat.");
        email.setCharset("utf-8");
        email.addPlainTextAlternativeBody("This is a test");

        // Create an HTML email body with an embedded image.
        String cid = email.addRelatedFile("qa_data/jpg/starfish.jpg");
        StringBuilder sbHtml = new StringBuilder();
        sbHtml.append("<html><body>This is a <b>test</b><br><img src=\"cid:STARFISH_CID\"/></body></html>");
        int numReplacements = sbHtml.replace("STARFISH_CID", cid);

        email.addHtmlAlternativeBody(sbHtml.getAsString());

        // OK.. we now have an HTML email with an embedded JPG image
        // We'll need to get the full MIME of the email encoded to a base64url string.
        StringBuilder sbMime = new StringBuilder();
        email.getMimeSb(sbMime);
        sbMime.encode("base64url", "utf-8");

        // The body of the HTTP request will be JSON..
        JsonObject json = new JsonObject();
        json.updateSb("raw", sbMime);

        // Send the email...
        Http http = new Http();
        http.setAuthToken("GMAIL-ACCESS-TOKEN");

        String url = "https://www.googleapis.com/gmail/v1/users/me/messages/send";
        HttpResponse resp = new HttpResponse();
        try {
            http.httpJson("POST", url, json, "application/json", resp);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // A status code of 200 indicates success.
        System.out.println("Response status code: " + resp.getStatusCode());
        System.out.println("Response body:");
        System.out.println(resp.getBodyStr());

        // The response body contains JSON.
        // Use the online tool at Generate JSON Parsing Code
        // to generate JSON parsing code.

        // A sample successful JSON response:

        // {
        //  "id": "166f0d4ac39e50bf",
        //  "threadId": "166f0d4ac39e50bf",
        //  "labelIds": [
        //   "SENT"
        //  ]
        // }
    }
}