api-first newsletter infrastructure
API-first publishing. Write in any editor, trigger from any pipeline, deliver to every inbox. No drag-and-drop. No template builders. No lock-in.
--- title: Q2 Engineering Report date: 2026-03-15 --- # Q2 Engineering Report The numbers are in, and **we're ahead of target.** > Key insight: retention improved 23% this quarter. Full breakdown below...
The numbers are in, and we're ahead of target.
Full breakdown below...
How it works
No drag-and-drop editors. No template builders. Just Markdown and an API.
Use any editor: VS Code, Obsidian, iA Writer, Vim, or pipe output from your AI agent. Full CommonMark + GFM + footnotes.
A single POST /v1/posts creates a draft. Add subscribers, configure your sending domain, and publish when ready.
Dual-render produces a web archive and email-safe HTML. Subscribers get a pixel-perfect email. Readers get a beautiful web page.
# Publish a newsletter in 7 lines curl -X POST https://api.imprimo.pub/v1/posts \ -H "Authorization: Bearer $TOKEN" \ -H "Content-Type: application/json" \ -d '{"title": "Hello World", "markdown": "# Hello World\n\nFirst issue."}' # Returns { "id": "post_abc123", "status": "draft" } curl -X POST https://api.imprimo.pub/v1/posts/post_abc123/publish \ -H "Authorization: Bearer $TOKEN"
Built for automation
Connect any LLM, script, or pipeline to Imprimo's API. Your agents generate Markdown — Imprimo handles rendering, delivery, and archiving.
# Your agent writes the content. One call publishes it. curl -X POST https://api.imprimo.pub/v1/posts/$ID/publish \ -H "Authorization: Bearer $TOKEN"
Works with Claude, ChatGPT, and any MCP-compatible agent.
Sponsorships
Drop a {{sponsor}} slot anywhere in your Markdown. Inject sponsor copy and a tracked URL via API at send time. Every click is attributed. Every send gets a shareable report.
Ad placement is coming soon. Join the waitlist to be notified.
Join the waitlistNo ad network, no rev share. Direct relationships with your sponsors.
Unique tracked URLs per issue. Sponsors get real attribution data, not estimates.
One-click report link for each send. Drop it in an email to your sponsor. Done.
Email templates
Three templates, fully responsive, tested across every major email client. Every color is customizable per publication.
Deliverability
Getting into the inbox is harder than it looks. Imprimo handles the authentication stack, pre-send checks, and reputation infrastructure so you can focus on your content.
Automatic DNS authentication on your custom sending domain. Configured correctly from day one.
Imprimo scans every issue for spam triggers before you hit publish. Flags problems, explains fixes.
Send from newsletter@yourdomain.com, not a shared Imprimo domain. Protects your sender reputation.
Bounce tracking, complaint rate monitoring, and automatic suppression. Your list stays clean.
Web pages
Every Imprimo publication ships with a signup page, a searchable web archive, and a permanent permalink for every issue. Pick a theme. Customize your colors. No CMS required.
yourpub.imprimo.pub or your custom domain. Subscriber form included.
Every issue indexed and searchable. Open Graph cards for every post.
Clean URLs for every issue. Share anywhere.
Everything else
Import, segment, and tag your list. Manage confirmed opt-ins, bounces, and unsubscribes from the dashboard or API.
Open rates, click rates, and subscriber growth. Per-issue and over-time views.
Full CommonMark + GFM. Footnotes render as popovers on web, endnotes in email. Syntax-highlighted code blocks.
Auto-generated OG images for every issue. Share-ready on every platform.
Version control your newsletters. Markdown files in a repo, published via API or GitHub Action.
Your list is yours. Export subscribers as CSV any time with no restrictions. No platform lock-in, ever.
Pricing
Start free. Upgrade when you grow. Pay for capacity, not sends.
Ship your first newsletter from code.
Custom domain, no branding — look professional.
Webhooks and analytics for your content pipeline.
Priority support and SLAs for production workloads.
Questions
Yes. Our migration tools import subscribers (CSV) and posts (HTML → Markdown). We handle the conversion, including preview text extraction.
Yes, on Pro and above. Configure SPF, DKIM, and DMARC through the dashboard. Your emails come from your domain, not ours.
Sends are paused until you upgrade or prune your list. We'll warn you at 90% so you're never caught off guard.
Yes. Free: 100 req/min, Pro: 500, Team/Business: 1,000. Rate limit headers are included on every response.
Yes. Imprimo ships an MCP server that works with Claude, ChatGPT, and any MCP-compatible agent. Your agent calls imprimo_publish — done.
Always. Every plan includes subscriber CSV export with no restrictions. Your list is yours.
Early access
Imprimo is in private beta. Drop your email and we'll be in touch when your spot is ready.