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(C# UWP/WinRT) SendGrid HTML Email with Embedded Images

See more SendGrid Examples

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

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code

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

bool success;

// 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;" />
Chilkat.BinData bdJpg = new Chilkat.BinData();
success = bdJpg.LoadFile("qa_data/jpg/starfish.jpg");
if (success == false) {
    Debug.WriteLine("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.
Chilkat.StringBuilder sbHtml = new Chilkat.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>");

Chilkat.JsonObject json = new Chilkat.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.AuthToken = "SENDGRID_API_KEY";

Chilkat.HttpResponse resp = null;
resp = await http.PostJson3Async("https://api.sendgrid.com/v3/mail/send","application/json",json);
if (http.LastMethodSuccess != true) {
    Debug.WriteLine(http.LastErrorText);
}
else {
    Debug.WriteLine("response status code: " + Convert.ToString(resp.StatusCode));
    // 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.)
    Debug.WriteLine(resp.BodyStr);

}


 

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