Official Docs: email_action

Standard javascript object

action_insert

Send an email whenever a new record is inserted into the selected table

action_update

Send an email whenever a record in the selected table is modified

affected_field_on_event

The field in the event that must be affected for this notification to send to subscribed users

category

The notification appears in the user notification preferences under the category provided. If no category is provided, it appears under 'Uncategorized'.

condition

Send Notification when conditions evaluate to true

content_type

Specify whether the message is sent with a format of HTML, plain text, or both

event_parm_1

The first event parameter contains a recipient, either a user sys_id, group sys_id or an email address, who should receive this notification

event_parm_2

The second event parameter contains a recipient, either a user sys_id, group sys_id or an email address, who should receive this notification

exclude_delegates

Do not send the notification to any delegates of this notification's recipients

force_delivery

Bypass settings that would normally prevent sending to the recipient (e.g., device.schedule, user.notification)

from

Email address you want to appear in the From field

generation_type

Action that causes an email to be sent. Specifies whether to send email based on a trigger, an event firing, or an action against a record.

importance

Importance/Priority flag for the email

include_attachments

Send all attachments from the triggering record as email attachments

item

The sys_id of the subscribed item

item_table

The table that the subscribed item resides in

mandatory

Prevent users from unsubscribing/filtering-out this notification

omit_watermark

Omitting watermark prevents any email replies from updating the triggering record

recipient_fields

Field in the currently-selected table that contains a reference to a user or group that will receive an email notification

recipient_groups

List of groups that will receive an email notification

recipient_users

List of users or email addresses that will receive an email notification

reply_to

Email address to be used when replying to the email notification

subscribable

Allow users to choose this notification when subscribing to their messages

sys_domain

Domain to which the rule belongs

sys_name

Display name for this application file

sys_overrides

Rule being overridden by the current record

sys_policy

Determines how application files are protected when downloaded or installed

sys_scope

Application containing this record

sys_version

Notification Version

weight

Used to decide which notification takes precedence when more than one qualifies