= 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.

=== Service client

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

[source,groovy]
----
import io.vertx.groovy.ext.mail.MailService
def 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,groovy]
----
import io.vertx.groovy.ext.mail.MailService
def mailService = MailService.createEventBusProxy(vertx, "vertx.mail")

def email = [
  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.