IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Email output plugin

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Email output plugin

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Plugin version: v4.1.3
Released on: 2023-10-03
Changelog

For other versions, see the Versioned plugin docs.

Getting help

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For questions about the plugin, open a topic in the Discuss forums. For bugs or feature requests, open an issue in Github. For the list of Elastic supported plugins, please consult the Elastic Support Matrix.

Description

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Sends email when an output is received. Alternatively, you may include or exclude the email output execution using conditionals.

Usage Example

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output {
  if "shouldmail" in [tags] {
    email {
      to => '[email protected]'
      from => '[email protected]'
      subject => 'Alert - %{title}'
      body => "Tags: %{tags}\\n\\Content:\\n%{message}"
      template_file => "/tmp/email_template.mustache"
      domain => 'mail.example.com'
      port => 25
    }
  }
}

Email Output Configuration Options

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This plugin supports the following configuration options plus the Common options described later.

Setting	Input type	Required
`address`	string	No
`attachments`	array	No
`authentication`	string	No
`body`	string	No
`cc`	string	No
`bcc`	string	No
`contenttype`	string	No
`debug`	boolean	No
`domain`	string	No
`from`	string	No
`htmlbody`	string	No
`password`	password	No
`port`	number	No
`replyto`	string	No
`subject`	string	No
`to`	string	Yes
`use_tls`	boolean	No
`username`	string	No
`via`	string	No
`template_file`	path	No

Also see Common options for a list of options supported by all output plugins.

`address`

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Value type is string
Default value is "localhost"

The address used to connect to the mail server

`attachments`

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Value type is array
Default value is []

Attachments - specify the name(s) and location(s) of the files.

`authentication`

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Value type is string
There is no default value for this setting.

Authentication method used when identifying with the server

`body`

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Value type is string
Default value is ""

Body for the email - plain text only.

`cc`

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Value type is string
There is no default value for this setting.

The fully-qualified email address(es) to include as cc: address(es).

This field also accepts a comma-separated string of addresses, for example: "[email protected], [email protected]"

`bcc`

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Value type is string
There is no default value for this setting.

The fully-qualified email address(es) to include as bcc: address(es).

This field accepts several addresses like cc.

`contenttype`

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Value type is string
Default value is "text/html; charset=UTF-8"

contenttype : for multipart messages, set the content-type and/or charset of the HTML part. NOTE: this may not be functional (KH)

`debug`

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Value type is boolean
Default value is false

Run the mail relay in debug mode

`domain`

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Value type is string
Default value is "localhost"

The HELO/EHLO domain name used in the greeting message when connecting to a remote SMTP server. Some servers require this name to match the actual hostname of the connecting client.

`from`

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Value type is string
Default value is "[email protected]"

The fully-qualified email address for the From: field in the email.

`htmlbody`

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Value type is string
Default value is ""

HTML Body for the email, which may contain HTML markup.

`password`

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Value type is password
There is no default value for this setting.

Password to authenticate with the server

`port`

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Value type is number
Default value is 25

Port used to communicate with the mail server

`replyto`

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Value type is string
There is no default value for this setting.

The fully qualified email address for the Reply-To: field.

`subject`

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Value type is string
Default value is ""

Subject: for the email.

`to`

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This is a required setting.
Value type is string
There is no default value for this setting.

The fully-qualified email address to send the email to.

This field also accepts a comma-separated string of addresses, for example: "[email protected], [email protected]"

You can also use dynamic fields from the event with the %{fieldname} syntax.

`use_tls`

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Value type is boolean
Default value is false

Enables TLS when communicating with the server

`username`

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Value type is string
There is no default value for this setting.

Username to authenticate with the server

`via`

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Value type is string
Default value is "smtp"

How Logstash should send the email, either via SMTP or by invoking sendmail.

`template_file`

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Value type is path
There is no default value for this setting.

Path of a [Mustache templating](https://mustache.github.io/) file used for email templating. See example in test fixture. Can be used with body to send multi-part emails. Takes precedence over htmlBody.

Common options

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These configuration options are supported by all output plugins:

Setting	Input type	Required
`codec`	codec	No
`enable_metric`	boolean	No
`id`	string	No

`codec`

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Value type is codec
Default value is "plain"

The codec used for output data. Output codecs are a convenient method for encoding your data before it leaves the output without needing a separate filter in your Logstash pipeline.

`enable_metric`

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Value type is boolean
Default value is true

Disable or enable metric logging for this specific plugin instance. By default we record all the metrics we can, but you can disable metrics collection for a specific plugin.

`id`

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Value type is string
There is no default value for this setting.

Add a unique ID to the plugin configuration. If no ID is specified, Logstash will generate one. It is strongly recommended to set this ID in your configuration. This is particularly useful when you have two or more plugins of the same type. For example, if you have 2 email outputs. Adding a named ID in this case will help in monitoring Logstash when using the monitoring APIs.

output {
  email {
    id => "my_plugin_id"
  }
}

Variable substitution in the id field only supports environment variables and does not support the use of values from the secret store.

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