Slack message deletion: avoiding accidental public access

Slack's default message deletion policy allows users to remove messages they've sent, which can help mitigate accidental public access to sensitive information. However, this feature has limitations in preventing long-term exposure risks.

Workspace owners and admins can configure global message retention policies to automatically delete messages after a set period. Yet, this approach lacks granularity, as it applies uniformly across the workspace without channel or user-specific controls.

Additionally, deleted messages are not immediately purged from Slack's servers, remaining recoverable for a short time by workspace admins or Slack support. This temporary retention window may still pose a risk if sensitive content was shared publicly.

How can workspace admins effectively balance message deletion policies with the need to prevent accidental public access to sensitive information? What are the limitations of Slack's current retention and deletion policies in addressing this risk? Are there third-party tools or integrations that provide more granular control over message visibility and deletion?