Letterly
Your Newsletter on X, LinkedIn, Threads and Facebook. In Your Own Voice.
Generate, schedule and publish posts to X, LinkedIn, Threads and Facebook from every edition you send.
One edition becomes a week of posts
One issue in, a week of posts out. Written in your voice and spaced across the days.
Reads every edition
Watches your RSS feed and picks up each new issue the moment it publishes. No copying, no pasting, no reminder to yourself.
Writes the way you write
Builds a persona from posts you have already published, then drafts against it. Your sentence length, your vocabulary, your habits.
Spaces them out for you
Fills a pool and places posts across the days ahead, so you keep showing up between editions instead of all at once.
The hard part is not writing the newsletter
It is everything after. Every edition needs its own posts, and the next one is already coming. The same three ideas get rewritten four times, shaped for four different feeds.
Generic AI output is obvious, so you end up doing it by hand. Then the week gets away, nothing goes out, and the audience you built goes quiet.
Letterly takes each edition the moment it publishes, splits it into the ideas worth saying on their own, and drafts them against posts you have already published.
Picked up, split, written and spaced across the week. One system covering all four.
The newsletter to social platform that still sounds like you
Voice: It reads you before it writes
Point Letterly at posts you have already published. It learns cadence, sentence length and the habits that repeat, and every draft is written against that persona.
Generation: Ten posts from one edition
Each issue is broken into the ideas worth saying on their own, then shaped per platform. Ten for X and five for LinkedIn by default, and you can change both.
Scheduling: Spread across the week, not dumped
Posts land in a pool and get placed across the days ahead, so your accounts keep moving in the gap between one edition and the next.
Publishing: Four accounts, one edition
Each post is shaped for where it lands. Longer on LinkedIn, tighter on X, threaded when the material runs long.
Control: You decide how much rope
Run it hands off or keep a hand on every post. The setting is one switch, and it can be changed at any time.
The Letterly loop
Posting is not the end of the work. Every post is a door back to the newsletter, and the people who walk through it are the ones who were never going to find you on their own.
Letterly keeps that circle turning for you:
Newsletter
You send an edition to the list you already have.
Social
Letterly turns it into posts and publishes them across four feeds.
Users
Those posts reach people who are not on your list yet.
Eyes
Some of them stop, read, and follow the link back to you.
Subscribers
A few subscribe, so the next edition goes out to a bigger list.
Letterly’s setup
Connect your newsletter once, pick where the posts go, and Letterly handles every edition from then on.
One paste to connect
Drop in your RSS URL. Letterly starts watching the feed that minute and catches the next edition on its own.
Nothing to configure
It reads your back catalogue to build the persona. The defaults are sensible enough to leave alone on day one.
Reversible at every step
Change the voice, the cadence or the autonomy level whenever. Nothing you set on the first day is permanent.
One plan. Everything in it.
$29 a month. Seven days free first. No tiers, no per platform pricing, no usage meter to watch.
Cancel before day seven and you are not charged.
Automation
- Picks up every edition from your feed
- Writes, schedules and publishes for you
- Manual, review window or full auto
Publishing
- X, LinkedIn, Threads and Facebook
- Calendar and daily scheduling from your pool
- CTA links back to your newsletter
Writing
- A voice persona built from your own posts
- AI composer for posts from scratch
- Five post shapes, from one-liners to stories
- Images extracted from each edition
Insight
- Follower growth on every platform
- Post and CTA analytics
What people are saying
“I used to publish my newsletter and then tell myself I'd promote it later.
Later usually never came lol
Been using Letterly lately and it's nice not having to think about that part anymore.
Big congrats to @vicente_evora on shipping such a genuinely useful product.”
“Recently the owner of letterly.pro reached out and asked if I'd give his new tool a try to use with my newsletter. I highly recommend! It's easy, helpful, and the dev is really great at adding features when requested. Check it out!”
“Congrats on the launch! This quite useful for folks who want to quickly repurpose content for different channels. Direct social media scheduling would certainly strengthen your core value.
All the best!”
“Hey Vicente, congrats on the launch! This product has a lot of potential, since content creation is one of the hottest fields right now! Wish you good look on your journey :))”
A note from the founder, Vicente Évora
“Writing the newsletter was never the hard part. Posting it was.”
Hey builder, I’m Vicente. I have been writing a newsletter for more than a year now, and the same problem kept showing up. Every edition went out, and the posts that were supposed to follow it never did.
Between university, a part-time job and side projects, there was no time left to post on social media while also writing the editions. So I built Letterly to do that part for me.
The newsletter now sits at 1,157 subscribers, and I have not spent a cent to get them. In the last three months, using Letterly consistently, it grew by 546. Straight from beehiiv:
Write to vicente@letterly.pro.
What builders ask before starting
How much time does this take?
About ten minutes to set up: paste your RSS feed and connect the accounts you want to post to. After that it depends on the autonomy level you pick. On Full Auto it takes none.
Will it post for me?
Only if you want it to. On Manual you approve every post. On Light Touch posts go out on schedule unless you step in during the approval window, anywhere from 1 to 24 hours before. On Full Auto it publishes without asking.
Will the posts sound like me?
Letterly builds a persona from posts you have already written and uses it for everything it generates, so the tone and structure match yours rather than sounding like generic AI.
Which newsletters does it work with?
Any newsletter with an RSS feed. beehiiv, Substack, Ghost, ConvertKit and Mailchimp all work.
Where does it post?
X, LinkedIn, Threads and Facebook. You choose which accounts to connect.
How many posts does one edition make?
Ten for X and five for LinkedIn by default, spread across the week at up to three a day on X and two on LinkedIn. You can change all of it in the agent settings.
Can I edit or stop a post?
Yes. Every post sits in your calendar and content pool, where you can edit, reschedule or reject it. The emergency stop halts the agent at once, and nothing queued slips through.
Does this actually grow a newsletter?
Posting consistently is what brings readers over from social, and it is the part most writers drop. Letterly keeps it going every week. My own numbers are in the note next to these questions.
What does it cost?
$29 a month, one plan with everything in it. The first seven days are free, and you can cancel from your settings whenever you want.