= 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>3.9.12</version>
</dependency>
----

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

[source,groovy,subs="+attributes"]
----
compile io.vertx:vertx-mail-service:3.9.12
----

=== Service client

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

[source,kotlin]
----
var 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,kotlin]
----
var mailService = MailService.createEventBusProxy(vertx, "vertx.mail")

var email = MailMessage(
  from = "user@example.com",
  bounceAddress = "bounce@example.com",
  to = "user@example.com")

mailService.sendMail(email, { result ->
  println("mail finished")
  if (result.succeeded()) {
    println(result.result())
  } else {
    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.