(C#) SendGrid Hello World -- Send Simple Email to Single Recipient

See more SendGrid Examples

Sends an email to a single recipient using SendGrid.

For more information, see https://sendgrid.com/docs/for-developers/sending-email/curl-examples/

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

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

Chilkat.Http http = new Chilkat.Http();
bool success;

// Implements the following CURL command:

// curl --request POST \
//   --url https://api.sendgrid.com/v3/mail/send \
//   --header 'Authorization: Bearer YOUR_API_KEY' \
//   --header 'Content-Type: application/json' \
//   --data '{"personalizations": [{"to": [{"email": "recipient@example.com", "name": "Recipient Name"}]}],"from": {"email": "sendeexampexample@example.com"},"subject": "Hello, World!","content": [{"type": "text/plain", "value": "Heya!"}]}'

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

// Use this online tool to generate code from sample JSON:
// Generate Code to Create JSON

// The following JSON is sent in the request body.

// {
//   "personalizations": [
//     {
//       "to": [
//         {
//           "email": "recipient@example.com",
//           "name": "Recipient Name"
//         }
//       ]
//     }
//   ],
//   "from": {
//     "email": "sendeexampexample@example.com"
//   },
//   "subject": "Hello, World!",
//   "content": [
//     {
//       "type": "text/plain",
//       "value": "Heya!"
//     }
//   ]
// }

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.UpdateString("personalizations[0].to[0].email","recipient@example.com");
// The "name" is optional.
json.UpdateString("personalizations[0].to[0].name","Recipient Name");
json.UpdateString("from.email","sendeexampexample@example.com");
json.UpdateString("subject","Hello, World!");
json.UpdateString("content[0].type","text/plain");
json.UpdateString("content[0].value","Heya!");

// Adds the "Authorization: Bearer YOUR_API_KEY" header.
http.AuthToken = "YOUR_API_KEY";
http.SetRequestHeader("Content-Type","application/json");

Chilkat.HttpResponse resp = http.PostJson3("https://api.sendgrid.com/v3/mail/send","application/json",json);
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

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);

}