Creator portfolio infrastructure
The hub that sounds like you.
Seamline generates email sequences, landing copy, and social posts in your voice — not a template.
0 emails
per welcome sequence
Alex Rivera
Indie game dev · newsletter writer
I make strange, quiet games. Currently: The Memory Cat. Also writing about the business of being small and doing things slowly.
The Memory Cat
Live ↗A puzzle game about remembering.
Slow Commerce
Newsletter2,400 readers. One email / week.
Get notified when The Memory Cat drops
From Alex. Unsubscribe anytime. White-label available on Collective.
Interactive proof, on demand
Watch AI write your first magnet.
Open the focused demo when you want it. The homepage stays calm and fast; the full voice-matched magnet, email, social, and attribution loop remains one click away.
Measured in public
The thread, without the spin.
Privacy-banded, precomputed platform signals. Subscriber identities never appear here.
Unavailable
Awaiting scheduled aggregate
No visitor-time database query
Unavailable
Awaiting scheduled aggregate
No visitor-time database query
Unavailable
Awaiting scheduled aggregate
No visitor-time database query
Copy that sounds like you wrote it.
Paste your project description. Seamline's AI — powered by Claude — generates three headline variants, landing page copy, a 5-email welcome sequence, and six social posts. All in your voice. No prompting required. No generic SaaS templates. The output sounds like you, because the input was written by you.
No other portfolio tool does this. Linktree and Beacons have no AI copy generation.
Magnet generated
Voice score: 91/100 ✓
Emails written
5
Social posts
6
Voice match
91%
Know exactly what's working.
Every subscriber is traced to the exact link, platform, and moment that captured them. When a Twitter thread drives 31 signups and a Reddit comment drives 2, you know — and you know why. End-to-end attribution, not just click counts. Source → click → capture → email-open, in one dashboard.
End-to-end attribution. From the tweet to the subscriber to the first open.
Attribution Dashboard · Last 30 days
412 clicks · 7.5% conversion
203 clicks · 3.9% conversion
89 clicks · 3.4% conversion
Total this month
42 captures · 704 clicks
Your list. Your domain. Always.
Your welcome sequences go from your authenticated sender domain on paid plans — never from a Seamline marketing list. Only creator-authored project content and creator-approved voice settings are used for AI. Subscriber emails, names, and identifying lead data never go to AI. No hidden unsubscribe. No dark patterns. No platform lock. If you ever leave, your list goes with you.
Creator-owned relationships. Zero platform dependency. Your data stays yours.
Data flow — always transparent
Your project description → Claude AI
Only creator-authored project content and creator-approved voice settings are used for AI. Subscriber emails, names, and identifying lead data never go to AI.
Your subscriber email → Your verified sender domain
Email dispatch uses your configured sender on paid plans; Seamline is infrastructure, not the list owner.
Subscriber list → Stays with you — export anytime
We never aggregate, sell, or model on your subscriber data.
From early-access creators
What changes when you have the whole thread.
Attribution changed everything.
“
I spent 3 years on link-in-bio tools that just listed my stuff. Seamline actually explains why people should care about my work — and tracks who does.
Game developer · newsletter writer
Early-access creator · Spark plan
Voice-matched in 4 minutes.
“
The AI wrote my welcome sequence in 4 minutes. I edited maybe 8 words. It sounds more like me than most things I actually write myself.
Solo SaaS founder
Early-access creator · Studio plan
31 subscribers from one post.
“
Knowing that my Reddit post drove 31 subscribers and my Twitter thread drove 2 changed how I spend my time completely.
Open-source builder · newsletter writer
Early-access creator · Spark plan
What we believe
Trust infrastructure, not growth hacks.
Linktree aggregates. Beacons monetizes. Seamline builds the relationship layer that belongs to you — not to us.
Your list.
Not ours. Not the platform's. If you leave Seamline tomorrow, every subscriber goes with you.
Your voice.
The AI reads your words and writes in your register. We don't homogenize. We amplify.
Your domain.
Every email comes from your sender address. Seamline is never the visible brand. You are.
Your data.
Subscriber emails never enter the AI. Capture data is yours — downloadable, portable, private.
| Differentiator | Seamline | Linktree | Beacons |
|---|---|---|---|
| AI copy in your voice | |||
| End-to-end attribution | Partial | ||
| Voice DNA — persistent voice profile |
Pricing
Start free. Grow when you’re ready.
The Free plan gives you a live hub, lead capture, and one AI magnet per month. Paid plans add more capacity and advanced intelligence.
Free
Free forever
- 3 projects
- 1 AI magnet / mo
- Seamline @handle URL
- Seamline branding shown
Studio
$29/mo
- 50 projects
- 25 AI magnets / mo
- Custom domain
- Seamline branding shown
See full pricing, feature matrix, and competitor comparison →
Frequently asked questions
What is Seamline?
Is Seamline free to use?
Who owns my subscriber list on Seamline?
How is Seamline different from Linktree?
How does the AI voice feature work?
What integrations does Seamline support?
Can AI agents access Seamline creator profiles?
How do I export my subscriber list from Seamline?
Your thread starts here.
One hub for everything you make, with an audience relationship that belongs to you.
No card to start. No dark patterns. Your subscriber data stays yours.