SendGrid sends email. Letterhead runs your newsletter business.
SendGrid (Twilio) is a developer email API — great for transactional and bulk sending, but it was never a newsletter platform. No editorial workflow, no monetization, no portfolio. That’s the part publishers actually need.
- Purpose-built for newsletters — not a raw email API
- Editorial production, monetization, and intelligence in one place
- Publisher-grade deliverability without building the infrastructure yourself
- Easy to move — send with Letterhead, or keep SendGrid for transactional if you need to
Trusted by New York Post, Condé Nast, Townsquare Media, and hundreds more.
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The world’s leading newsletter teams run on Letterhead
What teams see after switching to Letterhead.
Great content earns engagement. Engagement earns revenue. Revenue drives the business. Teams using Letterhead see all three improve within the first 90 days.
on existing newsletters, 90 days after switching to Letterhead
on monetized sends after 180 days through sales, CTAs, advertising
per edition, on average
API vs. newsletter platform
An email API isn’t a newsletter program.
SendGrid delivers messages
It’s built for developers sending transactional and bulk email. There’s no editorial workflow, no portfolio, and no way to monetize a send.
Letterhead runs the whole program
Drag-and-drop production with approvals, a portfolio view across every title, audience intelligence, and direct + programmatic + house ads built in.
Deliverability, handled for you
Publisher-scale sending with dedicated IP pools and deliverability management — without standing up and maintaining the infrastructure yourself.
“We’ve never seen open rates this high before in the history of our sending.”
— Townsquare Media
Questions, answered.
Can we keep SendGrid for transactional email?
Yes. Many teams keep SendGrid for transactional/app email and run their newsletter program on Letterhead — editorial, monetization, and intelligence in one purpose-built place.
What about deliverability?
Letterhead is built for publisher-scale sending — dedicated IP pools, deliverability management, and best-in-class inbox rates — managed for you, not assembled from API parts.
Do we have to migrate everything?
No heavy migration. Moving is fast — live in days — and we map your templates and audiences for you.
Is Letterhead built for large publishers?
Yes — New York Post, Condé Nast, and Townsquare Media run newsletter portfolios on Letterhead.
See Letterhead on a portfolio like yours.
Tell us what you’re trying to do with newsletters. We’ll show you the product, answer the questions a deck won’t, and hand you a pricing anchor for your size.