Blogger has Claude turn each new post into a Mailchimp draft, then approves it from Telegram

What they did

When a new post is merged into their blog repo, a GitHub Action finds the added post, sends it to Claude with a prompt asking for a short, punchy newsletter, and creates a draft campaign in Mailchimp. They then get a Telegram message with the subject, preview text and three buttons: Send Test Email, Discard, and Approve & Send. A small Cloudflare Worker handles the button taps. The prompt lives in its own Markdown file with placeholders for the author, audience and posts, so it can be changed without touching the code.

How it went

Nothing goes out until they tap Approve, and they no longer have to remember to send the newsletter or use Mailchimp's interface. They shared both parts as open-source projects.

Worth knowing

• This needs a developer setup: a blog stored in GitHub, API keys for Claude, Mailchimp and Telegram, and your own copy of the Worker. Claude sometimes wrapped its answer in code formatting even when told not to, so they strip that out before using it.
• Price check: Claude: free plan; Pro: US$20/month, or US$17/month on a yearly plan (US$200/year) (checked Nov 1, 2026); Mailchimp: free plan; Essentials: US$13/month (checked Nov 1, 2026).

Paying for Claude? See cheaper Claude alternatives.

Try it yourself

Paste this into a chatbot, then add your own details underneath.

Here is my new blog post. Write a short, punchy newsletter announcing it to my subscribers, who are [describe audience]. Give me a subject line, a preview text line, and a body under 150 words that ends with a link to the post. Match my voice and don't add anything that isn't in the post.

Original post

See David Dal Busco's original post on Blog → (Jun 2, 2026)