Input
A published or drafted Substack issue
Substack to LinkedIn
Turn a Substack newsletter into LinkedIn posts
Turn a finished Substack newsletter into LinkedIn posts that promote the idea inside the issue, not just the fact that a new post is live.
Output
Multiple LinkedIn post angles
Best fit
Substack writers who want more discovery from LinkedIn
letterflow.so/history/issue-104
✓
The Monday Memo
Generated Mar 24 · 23 pieces
5 LI10 X3 EM5 QT
LinkedIn #1
Most founders think fundraising is about the pitch deck. It's not. It's about the 47 conversations...
Twitter #1
Hot take: Your pitch deck doesn't matter nearly as much as you think. What matters? The 47 conversations...
This week
23
posts generated
Voice match
98%
accuracy
A Substack-to-LinkedIn workflow that keeps the idea intact
Start with the finished issue, keep the original point of view, and spread the strongest drafts across the week.
Step 01
Paste the Substack issue
Use the full issue so the argument, examples, and original phrasing are available for the LinkedIn drafts.
Step 02
Create several LinkedIn angles
Generate a launch-day insight, a practical lesson, and a story-led post from the same Substack send.
Step 03
Publish the strongest follow-ups
Edit the drafts for feed behavior and schedule them across the week so the issue gets more than one chance to travel.
Substack promotion should not be only an announcement
A LinkedIn post that only says a new Substack issue is live gives people little reason to stop scrolling. Better promotion leads with the idea, lesson, or story inside the issue, then lets the Substack link become the next step.
- Lead with a strong claim from the issue.
- Give readers a useful takeaway before asking for a click.
- Use the full issue to create posts that can stand alone in the feed.
One Substack issue can become several LinkedIn posts
Most issues contain more than one social angle. Letterflow helps pull out the main claim, a practical lesson, a quote, and a story-led frame so the same issue can support multiple LinkedIn posts.
- Use one post for the core idea.
- Use another for a specific lesson or mistake.
- Use a final follow-up to point curious readers back to the full issue.
Stop writing social posts from scratch
Letterflow turns one newsletter into a week of platform-ready content so your promotion starts with the writing you already trust.
Newsletter to LinkedIn posts toolSubstack to social posts workflowNewsletter social media content tool
Start free trialKeep the transition from LinkedIn to Substack natural
The reader should feel the same writer on both sides of the click. Letterflow uses the full newsletter as source material so the LinkedIn draft keeps the Substack voice rather than sounding like a generic promo caption.
- Keep signature phrases and examples where they help.
- Edit the opening for LinkedIn without flattening the point.
- Link back to the full issue only after the post has delivered value.
Compare the product before you choose the workflow
Review the main Letterflow landing page, pricing, and practical guides before you decide how to repurpose your next issue.
Frequently asked questions
Common questions
Do I need a direct Substack integration?
No. You can use the finished Substack issue as the source material by pasting the content into Letterflow.
How many LinkedIn posts should one Substack issue create?
Usually more than one. A strong issue can support a main insight, a tactical takeaway, and a story-led follow-up.
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