React Native

Render an Email to MIME in a StringBuilder

Demonstrates the Chilkat MailMan.RenderToMimeSb method, which renders an Email object as MIME text and appends the result to a StringBuilder, without sending the email. This example renders a message into a StringBuilder and prints it.

Background: This is the StringBuilder version of RenderToMime. Appending into a StringBuilder is more efficient when the MIME is large or when you plan to further inspect or manipulate it — searching, replacing, or accumulating additional text — without creating extra intermediate string copies.

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React Native

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

function chilkatExample() {
  // Demonstrates the MailMan.RenderToMimeSb method, which renders an Email object as MIME text
  // and appends the result to a StringBuilder (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 in a StringBuilder.';

  // Render the MIME into a StringBuilder.
  const sbMime = new StringBuilder();

  try {
    mailman.renderToMimeSb(email, sbMime);
  } catch {
    console.log(mailman.lastErrorText);
    return;
  }

  console.log(sbMime.getAsString());
}