Post to Substack with Zapier
Zapier's app catalog changes. Substack sometimes appears with actions that create posts or drafts, and sometimes only with triggers (for example when something is already published on Substack). Start every setup by checking what your Zapier account actually offers for Substack actions, not just triggers.
1. See if Zapier can publish to Substack directly
In Zapier, create a Zap and add an Action step. Search for Substack and open the integration. Read the full list of Actions. If you see something like creating a post, draft, or note, connect your Substack account and map fields from your trigger (title, body, link, and so on). Run a live test on a draft or test publication before you aim at subscribers.
If there is no create-style action, only triggers about new Substack activity, Zapier cannot finish the full "press publish inside Substack" step by itself. Use section 2.
2. Reliable fallback: assemble a draft Zapier can hand you
You still save time. Pick a trigger that has the text you care about (RSS, a form, a webhook, a new spreadsheet row). Chain an action that builds a Gmail draft, Google Doc, or Notion page with the title, canonical link, and body filled in. Your last step is one paste or light edit in the Substack composer. That avoids brittle unofficial APIs and matches how many teams operate when a platform has no strong write integration.
3. Trigger from the Cinevva blog RSS feed
When the source of truth is already a post on this site, use the blog feed as the trigger.
- Trigger app: RSS by Zapier.
- Feed URL:
https://app.cinevva.com/blog/rss.xml - Complete Zapier's test pull so you see real fields (title, link, description or full content, depending on the feed).
Map those fields into your Substack action if one exists, or into the Gmail or Docs action from section 2. RSS content is often HTML. Use Formatter by Zapier if a field must be plain text. Prefer absolute URLs for links and images so they behave in email.
4. Trigger from a webhook or form
Use Webhooks by Zapier (Catch Hook) when another system should fire the Zap. Zapier shows you a unique URL. Send a POST with JSON your Zap expects (title, body, url, or your own shape). Add Formatter or Code by Zapier only if you need to reshape payloads. Finish with the same Substack or draft action pattern as above.
5. The opposite direction: Substack to social
Publishing into Substack is what sections 1 through 4 cover. Many workflows instead use https://YOURNAME.substack.com/feed as the trigger and LinkedIn, X, or similar as the action so each issue is announced automatically. Search Zapier's template gallery for Substack plus your network if that is what you need.
Before you trust it in production
Run end-to-end tests with drafts or a private section first. Confirm how image URLs and embeds look in Substack. If a mapping error would embarrass the publication, add a manual review step or a destination that stays as draft until you confirm.