Better newsletters, better operation.

+32% engagement, +22% revenue, 75% less time

Letterhead gets you there with fast workflows, deep audience and content insights, built-in monetization, agentic tools, and human support. You make the choices; we do the rest.

The world's leading newsletter teams run on Letterhead

A true audience engagement flywheel.

Great content earns engagement. Engagement earns revenue. Revenue drives the business. Teams using Letterhead see all three improve within the first 90 days.

Engagement lift

+-155%
on existing newsletters, 90 days after switching to Letterhead

Revenue lift

+-107%
on monetized sends after 180 days — through sales, CTAs, advertising

Less production time

-364%
per edition, on average

“The biggest game changer was how much time we saved.”
— iNFOnews

Every tool your team needs to scale and succeed.

PORTFOLIO

Grow the portfolio, not the workload.

Workspaces, governance, and a true portfolio-wide view of every brand, audience, and goal. Your team will optimize and grow every single list and newsletter like never before.

PRODUCTION

Cut production time by 75%. Increase quality by ∞

The email builder you've dreamed of. Global and lockable templates, an easy but powerful drag-and-drop editor, intelligent and personalized content curations, approval flows and so much more. No HTML, no chaos.

INTELLIGENCE

Know exactly what's working.

See what content is driving results, where people are engaging, what strategies are working, and recommendations powered by billions of sends. Automate and simplify reporting, so you can focus on what's next.

REVENUE

More conversions, better CPMs, every send.

Direct ads, programmatic, house promotions, conversion CTAs: however email drives revenue, manage and fulfill and track it in seconds across every newsletter and audience.

AUDIENCE

Know and engage every reader.

A unified view of every person across products and lists, with granular data and powerful companywide controls. Create segments, journeys, triggered flows, preferences, and everything else you need to create engagement that lasts.

SEND

Get and stay in the inbox, every time.

Newsletter and transactional support, dedicated IP addresses, automated migration and warmup, detailed deliverability reporting and repair, all at best-in-class pricing.

AGENTS

Give your team a team.

Let agents handle the repetitive work: curate content, draft sections, segment audiences, and queue sends across every newsletter. Your team reviews and approves; the agents do the rest.

API & MCP

Tools that work the way you work, where you work.

API-first, with a native MCP server. A versioned REST API, webhooks, and Zapier, plus a per-tenant MCP server so your systems and your AI agents can read data, sync audiences, and curate content across every newsletter.

Our Mission

Newsletters are products. Your tools should help you run them that way.

The best newsletters have a clear and measured strategy, consistently improve their approach, and grow engagement and brand loyalty over time. Letterhead makes that easy.

Campaign mindset

How most teams run newsletters today

• Each send is a one-off
• Success is the open rate
• Someone presses send
• Whatever was published this week
• Revenue is an afterthought

Product mindset

How Letterhead teams run newsletters

• Each newsletter is a measurable product
• Success is engagement, growth, revenue
• Each newsletter has a workflow
• Strategy is iterative; ROI compounds
• Revenue is built in from day one

Our products

Add great newsletters to your existing tools, or consolidate on one platform.

Our tools allow you to add newsletter workflows and intelligence to your current ESP or CRM, or consolidate your entire email operation on one platform with intelligent personalization, targeting, and audience controls. Whatever your tech stack, we can help.

LAYER ON YOUR ESP

Letterhead Studio
Keep sending where you send today.

The newsletter layer for any ESP. Add portfolio management, production, intelligence, and revenue to your existing ESP, live in minutes.

GROW THE WHOLE OPERATION

Letterhead Suite
Consolidate onto one platform — Audience and Send included.

The complete email operating system. Manage and grow your newsletter portfolio — from design to production to audience to revenue to deliverability — with a platform purpose built for content and lasting engagement, backed by powerful deliverability, transactional, and audience management tools.

What customers say

"Letterhead has been an invaluable resource for us. Not only did it meet our budget needs, but it also enabled us to create personalized, creative newsletters that made our brand stand out. Their flexible platform allowed us to grow and adapt as our subscriber list and needs changed."
— Jessica Ford, Director, Startup Digest, Techstars

"It’s made newsletter advertising cleaner, more consistent, and far less time-consuming. Thanks to Letterhead, our newsletters have become the cornerstone of our strategy."
— Danielle Hastings, VP of Operations

"We at the Patch local news network have worked with Letterhead to create a critical monetization engine. They’ve been the best kind of partner — striving to understand our needs, quick to respond, and building for the future. Couldn’t have done it without them!"
— Simone Wilson, Senior Manager, Patch.com

Take Letterhead for a test drive.

Our team will show you how Letterhead delivers results for the world's leading companies, and help you take the product for a no-cost, no-obligation spin to see exactly how we'll work for you.