anchor.diff:  
   == link:src/main/java/io/vertx/example/mail/MailImages.java[MailImages]
   
  -This example shows how to send inlined images in mails.+This example shows how to send inlined images in mails.
  
positive.code: requiring a login.
  
  The login will currently use DIGEST-MD5, CRAM-MD5, PLAIN and LOGIN in order of
  preference, if the server announces AUTH but you don't need it (e.g. if you are
  authenticated by a local ip address) turn login off with `LoginOption.DISABLE`
  To specifically select a AUTH method or define the order of preference, you
  can do `setAuthMethods("METHOD1 METHOD2")`.
  
  == link:src/main/java/io/vertx/example/mail/MailServiceExample.java[MailServiceExample]
  
negative.code: This example shows how to leave out the From address in a mail but setting
  the bounceAddress property instead.
  
  the example deploys the mail service, however you can refactor the example to
  skip this step and start the service as follows:
  
  ----
  vertx run service:io.vertx.mail-service
  