React Native

Render an Email to MIME Bytes in a BinData

Demonstrates the Chilkat MailMan.RenderToMimeBd method, which renders an Email object as MIME bytes and appends the result to a BinData, without sending the email. This example renders a message into a BinData and prints the byte count.

Background: This is the binary version of RenderToMime. A BinData holds raw bytes, which is the right container when you want the rendered MIME as binary — to write it directly to a file or socket, hash it, or hand it to another API expecting a byte buffer — rather than as text.

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import { BinData, Email, MailMan } from '@chilkat/react-native'

function chilkatExample() {
  // Demonstrates the MailMan.RenderToMimeBd method, which renders an Email object as MIME
  // bytes and appends the result to a BinData (without sending the email).

  const mailman = new MailMan();

  // Build the email to render.
  const email = new Email();
  email.subject = 'Rendered email';
  email.from = 'alice@example.com';
  email.addTo('Bob', 'bob@example.com');
  email.body = 'This message is rendered to MIME bytes in a BinData.';

  // Render the MIME into a BinData.
  const bdMime = new BinData();

  try {
    mailman.renderToMimeBd(email, bdMime);
  } catch {
    console.log(mailman.lastErrorText);
    return;
  }

  console.log(`Rendered MIME size (bytes) = ${bdMime.numBytes}`);
}