= Vert.x Mail service (SMTP client implementation)

Vert.x service for sending SMTP emails via the vert.x event bus by
a mail service running on another machine on the local network.

== MailService

The MailService interface supports sending mails through another server running
on the local network by the event bus.

To use this project, add the following dependency to the _dependencies_ section of your build descriptor:

* Maven (in your `pom.xml`):

[source,xml,subs="+attributes"]
----
<dependency>
 <groupId>io.vertx</groupId>
 <artifactId>vertx-mail-service</artifactId>
 <version>3.8.1</version>
</dependency>
----

* Gradle (in your `build.gradle` file):

[source,groovy,subs="+attributes"]
----
compile io.vertx:vertx-mail-service:3.8.1
----

=== Service client

The service client only needs the name of the service address as parameter, the
default is "vertx.mail".

[source,java]
----
MailService mailService = MailService.createEventBusProxy(vertx, "vertx.mail");
----

The behaviour of MailClient and MailService is the same, if you like you can use the
MailClient interface to store the MailService instance.

A more complete example for sending a mail via the event bus is this:

[source,java]
----
MailService mailService = MailService.createEventBusProxy(vertx, "vertx.mail");

MailMessage email = new MailMessage()
  .setFrom("user@example.com")
  .setBounceAddress("bounce@example.com")
  .setTo("user@example.com");

mailService.sendMail(email, result -> {
  System.out.println("mail finished");
  if (result.succeeded()) {
    System.out.println(result.result());
  } else {
    System.out.println("got exception");
    result.cause().printStackTrace();
  }
});
----

== Service listener

To run the service listener that sends the mails, you need to start it separately
e.g. with the vertx command

[source,shell]
----
vertx run service:io.vertx.mail-service
----
or deploy the verticle inside your program.

If you have a smtp server running on the machine on port 25, you can use the default config.