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
Repurpose, schedule, and publish in one workflow.
Connect LinkedIn and X. Publish from your dashboard.
Native publishing
Post directly. No copying between tabs.
Schedule for later
Queue posts. Your content, your schedule.
Edit inline
Tweak before posting. Regenerate with one click.
Track performance
See how your posts perform. Analytics sync automatically from LinkedIn and X.
It sounds like you, because it learns you
Most AI tools guess at your voice. Letterflow learns it first.We build a voice profile from your existing content:
- ✓Learns from your existing posts
- ✓Captures your tone and vocabulary
- ✓Gets better with each use
Upload your past LinkedIn posts and newsletters.The more you add, the better it sounds.
🎯
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"
Average voice accuracy score across all users: 67
In blind tests, readers correctly identify AI-generated posts only 100% of the time
396 posts generated this month with an 18% acceptance rate
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