Logstash email alerts dynamically from multiple log files

Yes finally i got the solution for sending email alerts for any ERROR in message field.

output {    elasticsearch {            bind_host => "127.0.0.1"            port => "9200"            protocol => http       }    if  "ERROR" in [message]  {    email  {        options => [ "smtpIporHost", "smtp.gmail.com",         "port", "587",         "userName", "test@gmail.com",         "password", "your password",         "authenticationType", "plain",         "starttls","true"           ]            from => "<test@gmail.com>"            subject => "logstash alert"            to => "<test@gmail.com>"            via => "smtp"            body => "Here is the event line that occured: %{message}"       }    }    stdout { codec => rubydebug } }

Getting This error.

logstash_1       | [2017-08-14T07:05:57,056][ERROR][logstash.plugins.registry] Problems loading a plugin with {:type=>"output", :name=>"email", :path=>"logstash/outputs/email", :error_message=>"NameError", :error_class=>NameError, :error_backtrace=>["/usr/share/logstash/logstash-core/lib/logstash/plugins/registry.rb:221:in `namespace_lookup'", "/usr/share/logstash/logstash-core/lib/logstash/plugins/registry.rb:157:in `legacy_lookup'", "/usr/share/logstash/logstash-core/lib/logstash/plugins/registry.rb:133:in `lookup'", "/usr/share/logstash/logstash-core/lib/logstash/plugins/registry.rb:175:in `lookup_pipeline_plugin'", "/usr/share/logstash/logstash-core/lib/logstash/plugin.rb:137:in `lookup'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:88:in `plugin'", "(eval):16:in `initialize'", "org/jruby/RubyKernel.java:1079:in `eval'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:60:in `initialize'", "/usr/share/logstash/logstash-core/lib/logstash/pipeline.rb:139:in `initialize'", "/usr/share/logstash/logstash-core/lib/logstash/agent.rb:277:in `create_pipeline'", "/usr/share/logstash/logstash-core/lib/logstash/agent.rb:95:in `register_pipeline'", "/usr/share/logstash/logstash-core/lib/logstash/runner.rb:264:in `execute'", "/usr/share/logstash/vendor/bundle/jruby/1.9/gems/clamp-0.6.5/lib/clamp/command.rb:67:in `run'", "/usr/share/logstash/logstash-core/lib/logstash/runner.rb:183:in `run'", "/usr/share/logstash/vendor/bundle/jruby/1.9/gems/clamp-0.6.5/lib/clamp/command.rb:132:in `run'", "/usr/share/logstash/lib/bootstrap/environment.rb:71:in `(root)'"]}logstash_1       | [2017-08-14T07:05:57,108][ERROR][logstash.agent           ] Cannot load an invalid configuration {:reason=>"Couldn't find any output plugin named 'email'. Are you sure this is correct? Trying to load the email output plugin resulted in this error: Problems loading the requested plugin named email of type output. Error: NameError NameError"}logstash_1       | 2017-08-14 07:05:57,210 Api Webserver ERROR No log4j2 configuration file found. Using default configuration: logging only errors to the console.

Please have a look and let me know if we have to do some extra configuration to use email.