Paste your newsletter
Copy/paste your latest issue. That's it.
Built for newsletter creators
AI newsletter repurposing toolfor newsletter creators.
Paste your newsletter into Letterflow and get a week of social content in 60 seconds. Publish directly to LinkedIn and X with drafts that sound like you wrote them.
7-day free trial · No credit card required
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
Substack✦
beehiiv✦
ConvertKit✦
Ghost✦
Buttondown✦
Substack✦
beehiiv✦
ConvertKit✦
Ghost✦
Buttondown✦
The newsletter is the hard part. The promotion shouldn't be.
Newsletter writers spend 4-6 hours a week turning one newsletter into social content. Letterflow does it in 60 seconds.
Newsletter repurposing workflow
We build your voice profile
We analyze your writing style, tone, vocabulary, and structure.
Get a week of content
5 LinkedIn posts. 10 tweets. 3 email subject lines. 5 pull quotes. All in your voice.
Publish or schedule
Connect LinkedIn and X. Post now or schedule for later without extra tools.
Repurpose one newsletter into 23 ready-to-post assets
Paste → generate → post.
5 posts per newsletter
You already did the hard part: writing the newsletter. The mistake is starting from a blank page again for LinkedIn. One issue should give you a week's worth of posts, not another 90 minutes of rewriting.
Publish & Track
Review before anything goes live.
Repurpose each issue, edit the drafts you trust, then schedule or publish from one dashboard.
Native publishing
Review before anything goes live, then post directly without copying between tabs.
Schedule for later
Queue posts. Your content, your schedule.
Edit inline
Tweak the draft, keep the strongest angle, and approve it before publishing.
Track performance
See how your posts perform. Analytics sync automatically from LinkedIn and X.
Train on your own writing, not generic prompts
Letterflow builds from newsletters and posts you already wrote, so every draft starts with your point of view instead of a borrowed internet voice.Your voice profile keeps the source, stance, and phrasing close:
- ✓Train on your own writing
- ✓Keep your point of view intact
- ✓Capture your tone, vocabulary, and structure
Upload your past LinkedIn posts and newsletters.Review the drafts, keep your point of view intact, and publish only what still sounds like you.
🎯
Your voice profile
Based on 24 samples
Tone
Direct & conversational
Energy
High enthusiasm
Formality
Professional-casual
Signature phrases
"Here's the thing""Let me be direct""The real story"
Starts from your finished newsletter, not a scraped public profile clone.
Keeps drafts review-first so you can edit before publishing or scheduling.
Uses your own newsletters and posts to preserve phrasing, rhythm, and point of view.
Pricing
Simple pricing. Cancel anytime.
MOST POPULAR
Creator
$9
per month
- ✓8 newsletters
- ✓Voice profile
- ✓All platforms
- ✓Export all
Pro
$19
per month
- ✓Unlimited newsletters
- ✓Priority support
- ✓Team features
FAQ
How does voice matching work?
Paste a few of your existing LinkedIn posts and tweets. We analyze your tone, vocabulary, and sentence structure to build a voice profile. All generated content follows this profile.
Try the blind test →Can I edit the generated content?
Yes. Everything is editable before you publish or export. Tweak, regenerate, adjust — whatever you need.
Can I publish directly to LinkedIn and X?
Yes. Connect your accounts in Settings. Publish or schedule from your History. No copying required.
What analytics do you provide?
For posts published through Letterflow, we sync impressions, engagement, and clicks from LinkedIn and X. It shows up in your History.
What if I don't like the output?
Regenerate any piece with one click. You can also retrain your voice profile anytime with new samples.
Do you offer refunds?
Yes. Not happy in the first 14 days? Full refund. No questions.
One newsletter. One week of content. 60 seconds
7 days free · No credit card required