Postmark for WordPress hands wp_mail() off to Postmark's API for transactional and (optionally) broadcast message streams. API credentials and message-stream config live in wp_options, with a per-send audit log (custom table or option-backed list depending on version) capturing Postmark MessageId, recipient, subject, stream, status, and the API response. When webhooks are configured, delivery, bounce, spam-complaint, and open/click events flow back into the same log.

The default plugin admin shows configuration and a basic recent-sends list. It doesn't render the full per-send workspace operators need: per-stream deliverability, per-recipient send history, bounce cohorts by inactive-recipient status, and complaint clusters each require either Postmark-side dashboards or raw SQL against the local log.

SleekView reads the Postmark plugin's audit log, joins it to wp_users on recipient email, and exposes webhook events as filterable columns on the originating send row. Per-send status becomes a coloured column, message stream becomes a first-class filter, and bulk recipient suppression runs through the plugin's API client.

Postmark's message-stream model is one of the better deliverability decisions a transactional provider has made: keep transactional and broadcast sends in separate streams with independent reputations. The trouble is that the operational consequence of that model (auditing per-stream bounce rates, inactive recipients, and complaint clusters) lands on the WordPress side and the default plugin admin doesn't render it as a daily workspace. Per-stream audits become Postmark dashboard tours, per-recipient histories become SQL exercises, bulk reactivation lives behind individual recipient screens.

SleekView reads the Postmark plugin's audit log, joins it to wp_users and the webhook-event rows the plugin captures, and turns the data into filterable views per stream. Inactive recipients become a saved filter. Webhook events become columns.

Bulk reactivate routes through the plugin's own API client so Postmark stays the source of truth. For teams running Postmark across multiple message streams at WordPress scale, that workspace makes per-stream deliverability a daily scan rather than a quarterly emergency.