Your newsletter, written in Claude
Flyletter learns how you write from your own writing and keeps your brand profile, ideas, newsletters and social posts. Connect it to Claude and the whole workflow comes with it. You say what you want in the chat, and Claude writes it from everything Flyletter knows about your voice. Flyletter saves your ideas, newsletters and social posts to your account, and checks the finished draft and every social post against your standards. The writing runs on your Claude plan and counts toward its usage. It uses none of your Flyletter newsletter generations.
New to Flyletter? Start your free trial first, then connect. An account made from Claude's sign-in page starts on the free plan, which does not include the connector. Connect Flyletter to Claude opens Flyletter in Claude. Confirm it, sign in with your Flyletter account, and allow the connection. You can set up your brand profile in Flyletter or from the chat. Works in Claude on the web, on desktop, on mobile and in Claude Code.
On a Claude Team or Enterprise plan, an owner adds it for the workspace: add it as an owner
Write the newsletter. Ask for ideas from your sources and past issues, think one through with Claude, or start from a brain dump. Claude writes the beat outline with you in the chat from the same material Flyletter's outline agent receives, and revises it as many times as you ask. Then it writes the draft and the finishing passes the same way: subject line and preview text, a check against your writing standards, SEO title and description, and the older posts that should link to it. Flyletter saves each stage to your account, and the finishing pass fixes every sentence Flyletter flags against your standards. Say "just write it" and Claude runs every stage without stopping for your review.
Run your social posts. Ask what to post about from a finished issue. Claude plans the ideas from the same material Flyletter's planner receives, and you pick. Claude writes each post with your past posts on that platform as examples, and Flyletter checks it against your standards and saves it to the issue's Socials tab. Edit it in the chat, then post it now or say "tomorrow at 7am", and it goes out through your connected LinkedIn, X and Threads accounts.
Write anything in your voice. Ask for an email, a landing page, a cold pitch or a LinkedIn post that has nothing to do with the newsletter. Claude pulls your voice kit from Flyletter and writes it in the chat, from your live profile, with nothing pasted into a project.
Keep your brand brain current. Set up a brand, add your sources, and read your profile, your samples and your posts from the chat. When you tell Claude "I never use that word" or "stop using that closing move", it records the preference in your brand profile, so the next draft follows it, in the app and in the chat.
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Click Connect Flyletter to Claude. Claude shows you Flyletter and asks you to confirm.
- 2
Sign in with your Flyletter account when Claude asks, and allow the connection.
- 3
In any chat, say what you want. Allow the reading tools permanently and leave the writing tools on ask, so Claude checks with you before it changes your account. With the writing tools on ask, Claude asks before each save, including during "just write it". Allow the save tools when you want it to run straight through.
- Give me five newsletter ideas from my sources.
- Write a newsletter about why most AI content tools make writers sound the same.
- Outline these notes for me.
- Just write it, don't stop to check with me.
- What should I post about from this issue?
- Write the LinkedIn one and the X one.
- Post the LinkedIn one tomorrow at 7am.
- Write a cold email to a podcast host in my voice.
- What are my last three saved ideas?
- I never use the word "indeed". Remember that.
Claude says the connector is not on your plan. The connector is included in Flyletter's paid plans and the free trial. Plans are at flyletter.io/pricing, and you can upgrade in Flyletter under Settings.
Claude says your brand profile is not set up. Set it up in Flyletter, or ask Claude to set it up: give it your audience, what sets you apart, your main topics and up to five samples of your writing, and Flyletter builds the profile from them.
Posting says no account is connected. Connect LinkedIn, X or Threads on your brand page in Flyletter, then try again. Posting is on the Pro plan and during a free trial.
Claude cannot reach Flyletter. In Claude, open Customize, then Connectors, remove Flyletter and add it again from this page. If it still fails, write to [email protected].
Claude doesn't offer a feature this page describes. Claude updates a connector's tools on its own schedule. To get the newest ones now, open Flyletter in Claude's connector settings, select the menu beside Disconnect, and choose Refresh tools list.