React Native

Append a MIME Message to an IMAP Mailbox

Demonstrates the Chilkat Imap.AppendMime method, which uploads a complete RFC 822/MIME message to a mailbox. The first argument is the destination mailbox name and the second is the MIME text. This example obtains the MIME from an Email object and uploads it to Drafts.

Background: Use AppendMime when you already hold a message's raw source — a .eml file, a message you assembled, or one you received. Chilkat sends the text exactly as supplied, without normalizing line endings or re-encoding headers, so every header and MIME boundary is preserved verbatim. The supplied text must be plain text (no raw non-text binary bytes).

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React Native

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

async function chilkatExample() {
  // Demonstrates the Imap.AppendMime method, which uploads a complete MIME message to a mailbox.
  // The 1st argument is the destination mailbox name and the 2nd is the MIME text.

  const imap = new Imap();

  imap.ssl = true;
  imap.port = 993;

  try {
    await imap.connectAsync('imap.example.com');
  } catch {
    console.log(imap.lastErrorText);
    return;
  }

  try {
    await imap.loginAsync('user@example.com', 'myPassword');
  } catch {
    console.log(imap.lastErrorText);
    return;
  }

  // Build the email to be uploaded.
  const email = new Email();
  email.subject = 'Meeting agenda';
  email.from = 'Alice <alice@example.com>';
  email.addTo('Bob', 'bob@example.com');
  email.body = 'Let\'s meet at 10am to review the agenda.';

  // Obtain the MIME text to upload.  Here it is generated from the Email, but it could equally
  // be read from a .eml file.
  let mimeText: string;
  try {
    mimeText = email.getMime();
  } catch {
    console.log(email.lastErrorText);
    return;
  }

  // Append (upload) the MIME to the "Drafts" mailbox.
  try {
    await imap.appendMimeAsync('Drafts', mimeText);
  } catch {
    console.log(imap.lastErrorText);
    return;
  }

  console.log(`Appended UID: ${imap.appendUid}`);

  try {
    await imap.disconnectAsync();
  } catch {
    console.log(imap.lastErrorText);
    return;
  }
}