React Native

Load an Email from MIME in a StringBuilder

Demonstrates the Chilkat Email.SetFromMimeSb method, which loads an email from the MIME text stored in a StringBuilder object. On success, it replaces the entire current email. This example serializes one email into a StringBuilder with GetMimeSb, then reconstructs it in a second object.

Background: This is the StringBuilder counterpart to SetFromMimeText. When the MIME already lives in a StringBuilder — perhaps assembled or edited there — passing it directly avoids converting to an intermediate string, which is more efficient for large messages.

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React Native

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

function chilkatExample() {
  // Demonstrates the SetFromMimeSb method, which loads an email from MIME text stored in a
  // StringBuilder object.  On success, it replaces the entire current email.

  // Build a source email and get its MIME into a StringBuilder.
  const source = new Email();
  source.subject = 'Source message';
  source.from = 'alice@example.com';
  source.body = 'Hello from a StringBuilder.';
  const sbMime = new StringBuilder();
  source.getMimeSb(sbMime);

  // Load a new email object from the StringBuilder MIME.
  const email = new Email();

  try {
    email.setFromMimeSb(sbMime);
  } catch {
    console.log(email.lastErrorText);
    return;
  }

  console.log(`Loaded subject: ${email.subject}`);
}