Queue
Substack archive
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History
Compose new post
*bold* _italic_ ~strike~
> quote - bullet.
The first URL gets an auto link-preview card. Drop the Substack URL on its own line at the end.
Settings
WhatsApp connection
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Channel
Channels are auto-discovered after the posting phone pairs and WhatsApp delivers a history sync. If yours isn't here yet, post a test message to it from the phone — or use the manual lookup below.
How do I find the channel link?
- Open WhatsApp → Updates tab → open the Platypus Economics channel.
- Tap the channel name at the top to open Channel info.
- Tap Share link (Android) or Invite via link (iOS).
- Tap Copy link — it looks like
https://whatsapp.com/channel/0029Va.... Paste it above.
- Open
web.whatsapp.com, click the Channels (megaphone) icon in the left rail, open the channel. - Click the channel name at the top → Channel info → Share link → Copy.
1234567890@newsletter. You'd typically only have this if you've inspected a Baileys log or a previous channel record.
Important: the posting phone's WhatsApp account must already be an admin of this channel to send posts to it. Looking it up here only registers it with the app — it does not grant admin rights.
Mode
AI drafting
The Claude model and system prompt used to draft WhatsApp posts from new Substack publishes (and to power "refine" on queued drafts). The voice prompt is git-backed: saving here commits it to the app's GitHub repo, so edits survive redeploys and carry full history.
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YouTube cross-post
When a Substack post has a video, the app looks for a matching upload on this YouTube channel and uses the YouTube link as the WhatsApp preview (more compelling than text-only). Matching is by title similarity within ±3 days. Leave blank to disable.
Email alerts
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