Rust

SendGrid -- Send Email with Attachment

See more SendGrid Examples

Sends an email with an attachment. Rust

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

let http = chilkat::Http::new();

// 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"}]}],"from": {"email": "sender@example.com"},"subject":"Hello, World!","content": [{"type": "text/html","value": "Hey,<br>Please find attachment."}], "attachments": [{"content": "BASE64_ENCODED_CONTENT", "type": "text/plain", "filename": "attachment.txt"}]}'

// 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"
//         }
//       ]
//     }
//   ],
//   "from": {
//     "email": "sender@example.com"
//   },
//   "subject": "Hello, World!",
//   "content": [
//     {
//       "type": "text/html",
//       "value": "Hey,<br>Please find attachment."
//     }
//   ],
//   "attachments": [
//     {
//       "content": "BASE64_ENCODED_CONTENT",
//       "type": "text/plain",
//       "filename": "attachment.txt"
//     }
//   ]
// }

let json = chilkat::JsonObject::new();
let _ = json.update_string("personalizations[0].to[0].email", "recipient@example.com");
let _ = json.update_string("from.email", "sender@example.com");
let _ = json.update_string("subject", "Hello, World!");
let _ = json.update_string("content[0].type", "text/html");
let _ = json.update_string("content[0].value", "Hey,<br>Please find attachment.");

// Load a file to be attached.
let bd = chilkat::BinData::new();
let _ = bd.load_file("qa_data/pdf/hello.pdf").is_ok();

let _ = json.update_string("attachments[0].content", &bd.get_encoded("base64").unwrap_or_default());
let _ = json.update_string("attachments[0].type", "application/pdf");
let _ = json.update_string("attachments[0].filename", "hello.pdf");

// Adds the "Authorization: Bearer YOUR_API_KEY" header.
http.set_auth_token("YOUR_API_KEY");

let resp = chilkat::HttpResponse::new();
if http.http_json("POST", "https://api.sendgrid.com/v3/mail/send", &json, "application/json", &resp).is_err() {
    println!("{}", http.last_error_text());
    return;
}

let resp_status_code = resp.status_code();
println!("Response Status Code = {}", resp_status_code);
if resp_status_code != 202 {
    println!("Response Header:");
    println!("{}", resp.header());
    println!("Response Body:");
    println!("{}", resp.body_str());
    println!("Failed.");
    return;
}

println!("Success.");