IMAP, POP3 and SMTP clients for Dart and Flutter email developers.

Available under the commercial friendly MPL Mozilla Public License 2.0.

Installation

Add this dependency your pubspec.yaml file:

dependencies:
  enough_mail: ^2.1.1

The latest version or enough_mail is .

API Documentation

Check out the full API documentation at https://pub.dev/documentation/enough_mail/latest/

High Level API Usage

The high level API abstracts away from IMAP and POP3 details, reconnects automatically and allows to easily watch a mailbox for new messages. A simple usage example for using the high level API:

import 'dart:io';
import 'package:enough_mail/enough_mail.dart';

String userName = 'user.name';
String password = 'password';

void main() async {
  await mailExample();
}


/// Builds a simple example message
MimeMessage buildMessage() {
  final builder = MessageBuilder.prepareMultipartAlternativeMessage(
    plainText: 'Hello world!',
    htmlText: '<p>Hello world!</p>',
  )
    ..from = [MailAddress('Personal Name', 'sender@domain.com')]
    ..to = [
      MailAddress('Recipient Personal Name', 'recipient@domain.com'),
      MailAddress('Other Recipient', 'other@domain.com')
    ];
  return builder.buildMimeMessage();
}

/// Builds an example message with attachment
Future<MimeMessage> buildMessageWithAttachment() async {
  final builder = MessageBuilder()
    ..from = [MailAddress('Personal Name', 'sender@domain.com')]
    ..to = [
      MailAddress('Recipient Personal Name', 'recipient@domain.com'),
      MailAddress('Other Recipient', 'other@domain.com')
    ]
    ..addMultipartAlternative(
      plainText: 'Hello world!',
      htmlText: '<p>Hello world!</p>',
    );
  final file = File.fromUri(Uri.parse('file://./document.pdf'));
  await builder.addFile(file, MediaSubtype.applicationPdf.mediaType);
  return builder.buildMimeMessage();
}

/// High level mail API example
Future<void> mailExample() async {
  final email = '$userName@$domain';
  print('discovering settings for  $email...');
  final config = await Discover.discover(email);
  if (config == null) {
    // note that you can also directly create an account when
    // you cannot auto-discover the settings:
    // Compare the [MailAccount.fromManualSettings]
    // and [MailAccount.fromManualSettingsWithAuth]
    // methods for details.
    print('Unable to auto-discover settings for $email');
    return;
  }
  print('connecting to ${config.displayName}.');
  final account =
      MailAccount.fromDiscoveredSettings('my account', email, password, config);
  final mailClient = MailClient(account, isLogEnabled: true);
  try {
    await mailClient.connect();
    print('connected');
    final mailboxes =
        await mailClient.listMailboxesAsTree(createIntermediate: false);
    print(mailboxes);
    await mailClient.selectInbox();
    final messages = await mailClient.fetchMessages(count: 20);
    messages.forEach(printMessage);
    mailClient.eventBus.on<MailLoadEvent>().listen((event) {
      print('New message at ${DateTime.now()}:');
      printMessage(event.message);
    });
    await mailClient.startPolling();
    // generate and send email:
    final mimeMessage = buildMessage();
    await mailClient.sendMessage(mimeMessage);
  } on MailException catch (e) {
    print('High level API failed with $e');
  }
}

Low Level Usage

A simple usage example for using the low level API:

import 'dart:io';
import 'package:enough_mail/enough_mail.dart';

String userName = 'user.name';
String password = 'password';
String imapServerHost = 'imap.domain.com';
int imapServerPort = 993;
bool isImapServerSecure = true;
String popServerHost = 'pop.domain.com';
int popServerPort = 995;
bool isPopServerSecure = true;
String smtpServerHost = 'smtp.domain.com';
int smtpServerPort = 465;
bool isSmtpServerSecure = true;

void main() async {
  await discoverExample();
  await imapExample();
  await smtpExample();
  await popExample();
  exit(0);
}

Future<void> discoverExample() async {
  var email = 'someone@enough.de';
  var config = await Discover.discover(email, isLogEnabled: false);
  if (config == null) {
    print('Unable to discover settings for $email');
  } else {
    print('Settings for $email:');
    for (var provider in config.emailProviders) {
      print('provider: ${provider.displayName}');
      print('provider-domains: ${provider.domains}');
      print('documentation-url: ${provider.documentationUrl}');
      print('Incoming:');
      print(provider.preferredIncomingServer);
      print('Outgoing:');
      print(provider.preferredOutgoingServer);
    }
  }
}

/// Low level IMAP API usage example
Future<void> imapExample() async {
  final client = ImapClient(isLogEnabled: false);
  try {
    await client.connectToServer(imapServerHost, imapServerPort,
        isSecure: isImapServerSecure);
    await client.login(userName, password);
    final mailboxes = await client.listMailboxes();
    print('mailboxes: $mailboxes');
    await client.selectInbox();
    // fetch 10 most recent messages:
    final fetchResult = await client.fetchRecentMessages(
        messageCount: 10, criteria: 'BODY.PEEK[]');
    for (final message in fetchResult.messages) {
      printMessage(message);
    }
    await client.logout();
  } on ImapException catch (e) {
    print('IMAP failed with $e');
  }
}

/// Low level SMTP API example
Future<void> smtpExample() async {
  final client = SmtpClient('enough.de', isLogEnabled: true);
  try {
    await client.connectToServer(smtpServerHost, smtpServerPort,
        isSecure: isSmtpServerSecure);
    await client.ehlo();
    if (client.serverInfo.supportsAuth(AuthMechanism.plain)) {
      await client.authenticate('user.name', 'password', AuthMechanism.plain);
    } else if (client.serverInfo.supportsAuth(AuthMechanism.login)) {
      await client.authenticate('user.name', 'password', AuthMechanism.login);
    } else {
      return;
    }
    final builder = MessageBuilder.prepareMultipartAlternativeMessage(
      plainText: 'hello world.',
      htmlText: '<p>hello <b>world</b></p>',
    )
      ..from = [MailAddress('My name', 'sender@domain.com')]
      ..to = [MailAddress('Your name', 'recipient@domain.com')]
      ..subject = 'My first message';
    final mimeMessage = builder.buildMimeMessage();
    final sendResponse = await client.sendMessage(mimeMessage);
    print('message sent: ${sendResponse.isOkStatus}');
  } on SmtpException catch (e) {
    print('SMTP failed with $e');
  }
}

/// Low level POP3 API example
Future<void> popExample() async {
  final client = PopClient(isLogEnabled: false);
  try {
    await client.connectToServer(popServerHost, popServerPort,
        isSecure: isPopServerSecure);
    await client.login(userName, password);
    // alternative login:
    // await client.loginWithApop(userName, password); // optional different login mechanism
    final status = await client.status();
    print(
        'status: messages count=${status.numberOfMessages}, messages size=${status.totalSizeInBytes}');
    final messageList = await client.list(status.numberOfMessages);
    print(
        'last message: id=${messageList?.first?.id} size=${messageList?.first?.sizeInBytes}');
    var message = await client.retrieve(status.numberOfMessages);
    printMessage(message);
    message = await client.retrieve(status.numberOfMessages + 1);
    print('trying to retrieve newer message succeeded');
    await client.quit();
  } on PopException catch (e) {
    print('POP failed with $e');
  }
}

void printMessage(MimeMessage message) {
  print('from: ${message.from} with subject "${message.decodeSubject()}"');
  if (!message.isTextPlainMessage()) {
    print(' content-type: ${message.mediaType}');
  } else {
    final plainText = message.decodeTextPlainPart();
    if (plainText != null) {
      final lines = plainText.split('\r\n');
      for (final line in lines) {
        if (line.startsWith('>')) {
          // break when quoted text starts
          break;
        }
        print(line);
      }
    }
  }
}

Related Projects

Check out these related projects:

enough_mail_html generates HTML out of a MimeMessage.
enough_mail_flutter provides some common Flutter widgets for any mail app.
enough_mail_icalendar for handling calendar invites in emails.
enough_mail_app aims to become a full mail app.
enough_convert provides the encodings missing from dart:convert.

Miss a feature or found a bug?

Please file feature requests and bugs at the issue tracker.

Contribute

Want to contribute? Please check out contribute. This is an open-source community project. Anyone, even beginners, can contribute.

This is how you contribute:

Fork the enough_mail project by pressing the fork button.
Clone your fork to your computer: git clone github.com/$your_username/enough_mail
Do your changes. When you are done, commit changes with git add -A and git commit.
Push changes to your personal repository: git push origin
Go to enough_mail and create a pull request.

Thank you in advance!

Features

Base standards

✅ IMAP4 rev1 support
✅ SMTP support
✅ POP3 support
✅ MIME parsing and generation support

IMAP extensions

The following IMAP extensions are supported:

✅ IMAP IDLE
✅ IMAP METADATA
✅ UIDPLUS
✅ MOVE
✅ CONDSTORE
✅ QRESYNC
✅ ENABLE
✅ QUOTA
✅ IMAP Support for UTF-8
✅ ESEARCH
✅ SORT and THREAD
✅ UNSELECT)
✅ ESORT and PARTIAL from Contexts
✅ List extensions (rfc5258, rfc5819, rfc6154)

SMTP Extensions

The following SMTP extensions are supported:

✅ 8-bit MIME

Security

The following security extensions are supported:

✅ Partial signing of messages using DKIM

Supported encodings

Character encodings:

ASCII (7bit)
UTF-8 (uft8, 8bit)
ISO-8859-1 (latin-1)
ISO-8859-2 - 16 (latin-2 - 16)
Windows-1250, 1251, 1252, 1253, 1254 and 1256
GB-2312, GBK, GB-18030, Chinese, CSGB-2312, CSGB-231280, CSISO-58-GB-231280, ISO-IR-58, X-Mac-ChineseSimp
Big5
KOI8-r and KOI8-u

Transfer encodings:

Quoted-Printable (Q)
Base-64 (base64)

To do

Compare issues

Develop and Contribute

To start check out the package and then run dart run test to run all tests.
Public facing library classes are in lib, lib/imap and lib/smtp.
Private classes are in lib/src.
Test cases are in test.
Please file a pull request for each improvement/fix that you are create - your contributions are welcome.
Check out https://github.com/enough-Software/enough_mail/contribute for good first issues.
When changing model files, re-run the code generation by calling flutter pub run build_runner build --delete-conflicting-outputs.

License

enough_mail is licensed under the commercial friendly Mozilla Public License 2.0.

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README.md

README.md

Installation

API Documentation

High Level API Usage

Low Level Usage

Related Projects

Miss a feature or found a bug?

Contribute

Features

Base standards

IMAP extensions

SMTP Extensions

Security

Supported encodings

To do

Develop and Contribute

License

Files

README.md

Latest commit

History

README.md

File metadata and controls

Installation

API Documentation

High Level API Usage

Low Level Usage

Related Projects

Miss a feature or found a bug?

Contribute

Features

Base standards

IMAP extensions

SMTP Extensions

Security

Supported encodings

To do

Develop and Contribute

License