Integration
MailPilotX and the Newsletter WordPress plugin
The Newsletter plugin keeps lists in WP. For SPF/DKIM, stats and a modern editor, move sending to MailPilotX.
How to connect
Export Newsletter lists, import into MailPilotX, then a webhook on new signup (WP automation or Zapier).
Honest limits
No official Newsletter OAuth app. In the product, MailPilotX Sync gives you a secret webhook URL (Pro / Business): the tool POSTs JSON, the contact lands in your list. CSV and the REST API still work.