Java

SendGrid HTML Email with Embedded Images

See more SendGrid Examples

Demonstrates how to send an HTML email with embedded images using SendGrid. Chilkat2 Java

import com.chilkatsoft.chilkat2.BinData;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Http;
import com.chilkatsoft.chilkat2.HttpRequest;
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 requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code

        HttpRequest req = new HttpRequest();
        Http http = new Http();

        // First.. load a JPG file and build an HTML img tag with the JPG data inline encoded.
        // Our HTML img tag will look like this:
        // <img src="data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEA3ADcAA..." alt="" style="border-width:0px;" />
        BinData bdJpg = new BinData();
        try {
            bdJpg.loadFile("qa_data/jpg/starfish.jpg");
        } catch (ChilkatException e) {
            System.out.println("Failed to load JPG file.");
            return;
        }

        // Note: HTML containing embedded base64 image data may not be visible in all email clients.
        // For example, GMail might not display the image, but viewing in Outlook might be OK.
        StringBuilder sbHtml = new StringBuilder();
        sbHtml.append("<html><body><b>This is a test<b><br /><img src=\"data:image/jpeg;base64,");
        // Append the base64 image data to sbHtml.
        bdJpg.getEncodedSb("base64", sbHtml);
        sbHtml.append("\" alt=\"\" style=\"border-width:0px;\" /></body></html>");

        JsonObject json = new JsonObject();
        json.updateString("personalizations[0].to[0].email", "matt@chilkat.io");
        json.updateString("personalizations[0].to[0].name", "Matt");
        json.updateString("from.email", "admin@chilkatsoft.com");
        json.updateString("subject", "Test HTML email with images");
        json.updateString("content[0].type", "text/html");
        json.updateSb("content[0].value", sbHtml);

        http.setAuthToken("SENDGRID_API_KEY");

        HttpResponse resp = new HttpResponse();
        try {
            http.httpJson("POST", "https://api.sendgrid.com/v3/mail/send", json, "application/json", resp);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("response status code: " + resp.getStatusCode());
        // Display the response.
        // If successful, the response code is 202 and the response body string is empty.
        // (The response body string may also be empty for error response codes.)
        System.out.println(resp.getBodyStr());
    }
}