Substack Integration
Automatically publish your best posts to Substack Notes without copy-pasting.
How it works
Connect Substack in Settings with your substack.sid session cookie. Once connected, choose Substack as a destination in your primary sync flow, additional sync flows, or the Create page.
What gets posted
- Text posts become Substack Notes
- Image posts upload images to Substack and attach them to the Note
- Video posts upload to Substack's video pipeline and attach to the Note
- Links are preserved and can render as Note attachments
- Per-platform AI prompts can tailor content specifically for Substack
Why cross-post to Substack Notes
Substack is where your most committed audience already expects deeper context. Notes gives you a lower-friction way to stay visible between newsletter issues: short observations, links, launches, clips, and image posts can reach subscribers without becoming a full essay.
Cross-posting works especially well when your main social account is where ideas start, but Substack is where trust compounds. Ferryman lets the same post appear in Notes automatically, so your newsletter audience sees more of your thinking without adding another daily publishing checklist.
Best source platforms for Substack Notes
- X to Substack: send short takes, launch updates, and links to subscribers who do not check X.
- Bluesky to Substack: preserve thoughtful threads and community updates in your newsletter ecosystem.
- Threads to Substack: turn conversational posts into Notes that keep casual readers warm.
- LinkedIn to Substack: republish professional commentary where your highest-intent readers can follow along.
- Facebook to Substack: route Page updates and link posts into a subscriber-friendly feed.
Target-only support
Substack works as a destination for posts from X, Bluesky, Threads, Mastodon, LinkedIn, Facebook, YouTube Shorts, and TikTok videos. Ferryman does not currently use Substack as an origin platform, and it skips unsupported Substack-specific behaviors like reposts and reply-chain continuations.
Setup
- Sign in to Ferryman
- Go to Settings and open the Substack connection card
- Paste your
substack.sidcookie value - Add your Substack username so Ferryman can show live Note links
- Select Substack as a destination in your sync flow or Create page
Frequently asked questions
Does Ferryman post to Substack Notes?
Yes. Ferryman publishes to Substack Notes as a destination platform. It supports text notes, image notes, and video notes.
Can I use Substack as my origin platform?
No. Substack is currently supported as a target platform only. Ferryman can send posts to Substack Notes, but it does not read your Substack Notes feed as an origin.
How does Substack connection work?
Substack does not offer a public OAuth posting API for Notes. Ferryman connects using your substack.sid session cookie and stores it encrypted when SUBSTACK_ENCRYPTION_KEY is configured.
Do reposts and replies work on Substack?
No. Ferryman skips reposts and reply-chain continuations for Substack because the Notes adapter posts new notes and does not expose a safe repost or reply-chain primitive.
Can Ferryman cross-post from X or Bluesky to Substack?
Yes. Set X, Bluesky, Threads, Mastodon, LinkedIn, or Facebook as your origin and choose Substack as a destination. Ferryman turns each new source post into a Substack Note automatically.
Can I customize posts before they go to Substack?
Yes. Ferryman supports per-target prompts and filters, so you can make Substack Notes more conversational, expand context, or skip posts that do not belong in your subscriber-facing feed.
More about Substack
Cross-post from other platforms to Substack
- X → SubstackCross-post from X to Substack
- Bluesky → SubstackCross-post from Bluesky to Substack
- Threads → SubstackCross-post from Threads to Substack
- Mastodon → SubstackCross-post from Mastodon to Substack
- LinkedIn → SubstackCross-post from LinkedIn to Substack
- Facebook → SubstackCross-post from Facebook to Substack