React Native Requires Chilkat v11.0.0+

IMAP Download All Email One at a Time

Demonstrates how to download every email in an IMAP mailbox one at a time as a MIME string or as an email object. (The MIME contains the full contents of the email including all attachments.) React Native

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

async function chilkatExample() {
  const imap = new Imap();

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

  // Connect to an IMAP server.
  // Use TLS
  imap.ssl = true;
  imap.port = 993;
  try {
    await imap.connectAsync('imap.example.com');
  } catch {
    console.log(imap.lastErrorText);
    return;
  }

  // Login
  try {
    await imap.loginAsync('myLogin', 'myPassword');
  } catch {
    console.log(imap.lastErrorText);
    return;
  }

  // Select an IMAP mailbox
  try {
    await imap.selectMailboxAsync('Inbox');
  } catch {
    console.log(imap.lastErrorText);
    return;
  }

  // Once the mailbox is selected, the NumMessages property
  // will contain the number of messages in the mailbox.
  // You may loop from 1 to NumMessages to
  // fetch each message by sequence number.

  const bUid = false;
  let mimeStr = '';
  const n = imap.numMessages;
  for (let i = 1; i <= n; i++) {

    // Download the email by sequence number.
    mimeStr = await imap.fetchSingleAsMimeAsync(i, bUid);

    // ... your application may process each MIME string...
  }

  // An alternative is to download each email in the form of an
  // email object, like this:
  const email = new Email();
  for (let i = 1; i <= n; i++) {

    // Download the email by sequence number.
    await imap.fetchEmailAsync(false, i, bUid, email);

    // ... your application may process the email object...
  }

  // Disconnect from the IMAP server.
  await imap.disconnectAsync();
}