builder.addEnvironment(new GreenMailTestEnvironment("pop3"), MailMessageContextValidator.INSTANCE);
builder.addEnvironment(new GreenMailTestEnvironment("imap"), MailMessageContextValidator.INSTANCE);
MailChannel channel = new MailChannel();
builder.addAsyncChannel(channel);
builder.addAxisAsyncTestClient(new AxisAsyncTestClient(), new MailAxisTestClientConfigurator(MailConstants.TRANSPORT_FORMAT_TEXT));
builder.addAxisAsyncTestClient(new AxisAsyncTestClient(), new MailAxisTestClientConfigurator(MailConstants.TRANSPORT_FORMAT_MP));
builder.addByteArrayAsyncTestClient(new MailAsyncClient(new FlatLayout()));
builder.addByteArrayAsyncTestClient(new MailAsyncClient(new MultipartLayout()));