mailer

mailer is an easy to use library for composing and sending emails in Dart.

Mailer supports file attachments and HTML emails.

mailer2 and mailer3

mailer2 and mailer3 on pub.dart are forks of this project.

mailer was not well maintained and mailer2 and mailer3 had some important fixes.

Currently mailer should include all known bug-fixes and AFAIK there is no reason to use mailer2 or mailer3.

Dart2 support

Support for dart2 has been added in version ^1.2.0

Version ^2.0.0 is a rewrite (it too supports dart1.x and dart2).

Even though the API for ^2.0.0 has slightly changed, most programs will probably continue to work with deprecation warnings.

SMTP definitions

Mailer provides configurations for a few common SMTP servers.

Please create merge requests for missing configurations.

Copy lib/smtp_server/gmail.dart to lib/smtp_server/xxx.dart
Adapt the code. (See lib/smtp_server.dart for possible arguments)
Export the newly created SMTP server in lib/smtp_server.dart
Create a pull request.

In a lot of cases you will find a configuration in legacy.dart

Features

Plaintext and HTML emails
Unicode support
Attachments
Secure (filters and sanitizes all fields context-wise)
Use any SMTP server like Gmail, Live, SendGrid, Amazon SES
SSL/TLS support
Pre-configured services (Gmail, Yahoo, Hotmail, etc.). Just fill in your username and password.

TODO HELP WANTED

Correct encoding of non ASCII mail addresses.
Reintegrate address validation from version 1.*
Improve Header types. (see ir_header.dart)
We should choose the correct header based on the header name.
Known headers (list-unsubscribe,...) should have their own subclass.
Improve documentation.

Examples

Sending an email with SMTP

See gmail example.

import 'package:mailer/mailer.dart';
import 'package:mailer/smtp_server.dart';

main() async {
  String username = 'username@gmail.com';
  String password = 'password';

  final smtpServer = gmail(username, password);
  // Use the SmtpServer class to configure an SMTP server:
  // final smtpServer = SmtpServer('smtp.domain.com');
  // See the named arguments of SmtpServer for further configuration
  // options.  
  
  // Create our message.
  final message = Message()
    ..from = Address(username, 'Your name')
    ..recipients.add('destination@example.com')
    ..ccRecipients.addAll(['destCc1@example.com', 'destCc2@example.com'])
    ..bccRecipients.add(Address('bccAddress@example.com'))
    ..subject = 'Test Dart Mailer library :: 😀 :: ${DateTime.now()}'
    ..text = 'This is the plain text.\nThis is line 2 of the text part.'
    ..html = "<h1>Test</h1>\n<p>Hey! Here's some HTML content</p>";

  try {
    final sendReport = await send(message, smtpServer);
    print('Message sent: ' + sendReport.toString());
  } on MailerException catch (e) {
    print('Message not sent.');
    for (var p in e.problems) {
      print('Problem: ${p.code}: ${p.msg}');
    }
  }
  // DONE
  
  
  // Let's send another message using a slightly different syntax:
  //
  // Addresses without a name part can be set directly.
  // For instance `..recipients.add('destination@example.com')`
  // If you want to display a name part you have to create an
  // Address object: `new Address('destination@example.com', 'Display name part')`
  // Creating and adding an Address object without a name part
  // `new Address('destination@example.com')` is equivalent to
  // adding the mail address as `String`.
  final equivalentMessage = Message()
      ..from = Address(username, 'Your name')
      ..recipients.add(Address('destination@example.com'))
      ..ccRecipients.addAll([Address('destCc1@example.com'), 'destCc2@example.com'])
      ..bccRecipients.add('bccAddress@example.com')
      ..subject = 'Test Dart Mailer library :: 😀 :: ${DateTime.now()}'
      ..text = 'This is the plain text.\nThis is line 2 of the text part.'
      ..html = "<h1>Test</h1>\n<p>Hey! Here's some HTML content</p>";
    
  final sendReport2 = await send(equivalentMessage, smtpServer);
  
  // Sending multiple messages with the same connection
  //
  // Create a smtp client that will persist the connection
  var connection = PersistentConnection(smtpServer);
  
  // Send the first message
  await connection.send(message);
  
  // send the equivalent message
  await connection.send(equivalentMessage);
  
  // close the connection
  await connection.close();
  
}

License

This library is licensed under MIT.