Your example does not work, method has wrong number of arg parameters about email4j

[jayjupdhig]

That is correctly:

´´´
SmtpClient client = new SmtpClient("juan", "desimoni", "juan.smtp.host", Integer.valueOf(SmtpClient.DEFAULT_SMTP_PORT), new ClientConfiguration());

´´´

You're welcome!! ;-)

[jayjupdhig]

One problem more, the thing with the collection:

final List to = Collections.singletonList("[email protected]");

	EmailBuilder.newEmail()
    .withSubject("This is an email subject")
    .to(to)
    .withBody("Body of the message")
    .addAttachment(new EmailAttachment("id", "AttachmentContent", "text/plain; charset=UTF-8"))
    .build();

[jayjupdhig]

One problem more, the thing with the addAttachment (insted of withAttachment(...)) method:

final List to = Collections.singletonList("[email protected]");

EmailBuilder.newEmail()
.withSubject("This is an email subject")
.to(to)
.withBody("Body of the message")
.withAttachment(new EmailAttachment("id", "AttachmentContent", "text/plain; charset=UTF-8"))
.build();

[jayjupdhig]

To be truthful: does not really look good with your client jar... problems from beginnung...!!

[jayjupdhig]

-> There are A LOT of more issues...

[jayjupdhig]

anway - problem solved by not-using your library!! ;-)