Add the ability to send approval workflow notifications via Slack as an alternative to email/native Jira notifications.
Supports both Jira and Confluence products with product-specific rendering contexts. Includes interactive approval buttons directly in Slack messages, real-time message updates reflecting decision outcomes, and automatic email fallback when Slack delivery fails.

Features

Workspace connections

• Connect up to 10 Slack workspaces per instance via OAuth

• Settings page to manage connections: rename, set default, delete, test

• Per-definition workspace and channel overrides

• Token revoked/app uninstalled detection with automatic invalidation and admin-visible instance errors

Notification delivery

• Three delivery modes: Direct Message, Channel with mentions, or Both (configurable globally)

• All approval notification types supported

• Async dispatch with automatic email fallback on any Slack failure

• Dedicated Slack message templates (mrkdwn format) for each notification type, customizable per template

Interactive actions in Slack

• Approve, Reject, Abstain buttons with optional comment modal (respects comment-required settings)

• Vote button opening a modal with the step's configured voting options (single and multi-choice)

• Identity resolution maps Slack users back to Atlassian accounts via email matching

• Feedback messages confirming whether the decision was applied

Message lifecycle

• When a step completes, all original Slack messages for that step are updated in-place to show the outcome (decisions,
  vote tallies, links)

• Thread replies on channel messages after each individual decision, with progress counters for group steps

• Expired and reassigned approvals update their Slack messages to reflect the new state and remove action buttons

Notification history

• Admin-only activity log with pagination, sorting, and filtering by status, recipient, and date range

• Tracks SENT, UPDATED, and FAILED statuses per message

• Automatic cleanup of old records (30 days for updated/failed, 90 days for sent)

Settings UI

• Slack settings page under app settings (General tab + Notification History tab)

• Delivery mode and default channel configuration with validation

• Notification mechanism selector shows Slack option, auto-switches on first connection

• Per-definition Slack workspace and channel override in the definition settings form