Studio — The newsletter layer for any ESP | Letterhead

Faster, better newsletters — on your existing system.

Letterhead Studio adds portfolio management, template creation, editorial production, content intelligence, and revenue insertion to the ESP or CRM you already use. Live in minutes, no migration.

10x your newsletters

Create, manage, design, produce, measure, monetize.

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.

Do great newsletters, not migrations.

Studio brings agentic workflows, intelligent content creation, powerful templating and design systems, and workflows your team will love — connected to your existing stack in seconds.

You want Studio if:

You want to keep your existing ESP.
You might change ESPs later but want to level up newsletters now.
You want better production workflows and engagement without disrupting other teams.

To get started:

Connect your existing ESP.
Build templates or import your existing ones.
Produce and manage workflows in Letterhead.
See and use your existing segments and lists.
Send through your ESP.
See edition data in both systems.

Engagement lift

+-181% on existing newsletters, 90 days after switching to Letterhead

Revenue lift

+-124% on monetized sends after 180 days — through sales, CTAs, advertising

Less production time

-423% per edition, on average

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

You've never newslettered like this before.

Portfolio management

Workspaces, governance, and a portfolio-wide view across every brand, audience, and goal — grow the portfolio, not the workload.

Editorial production

A real drag-and-drop editor, templates, curation, and approvals. On brand every send, no HTML.

Content intelligence

Attribution, audience tiers, and segments to launch — built from the data already in your ESP and CRM.

Revenue ops

Direct, programmatic, and house ads fulfilled and reported automatically across every send.

Works with your ESP

Layers on Iterable, Sailthru, Mailchimp, Braze, HubSpot, Cordial, and more — no rip-and-replace.

Live in days

No migration project. Connect the ESP you already send with and you're publishing on Studio in days.

Studio works with and supercharges your existing ESP & CRM.

Letterhead supports every major ESP and CRM. Don't see yours listed? We can make it, fast.

Sending & ESP

Mailchimp Constant Contact Adobe Campaign Adestra Iterable Braze Cordial Listrak

Data, CRM & CDP

HubSpot Salesforce

Content & CMS

WordPress BLOX Sanity CUE

Events & commerce

CitySpark Evvnt Shopify

Ad & monetization

RevContent LiveIntent

Custom

[Custom integration](/content/integrations/custom "Custom integration"/index.html)

Letterhead Studio vs other solutions

See how Letterhead compares to other email design and build tools — a faster, better build today, with room to grow into curation, workflow, and revenue.

Take Studio for a test drive on your own ESP.

Bring your current ESP and a recent edition. We'll show you how Studio transforms your newsletter process and outcomes in days.