Code-First CMS For Newsletters

The CMS for
Newsletters

Build blocks with React Email and Tailwind CSS,
and compose newsletters in a simple admin interface.

Why we built Celaro

Build a system of blocksand let your team send newsletters with confidence

We built Celaro because shipping newsletters meant choosing between two bad options. Developer-heavy tools created bottlenecks. Marketing-heavy tools led to broken formatting and inconsistent designs.

Typed blocks in your codebase

Code-First
For Developers

Build blocks in code right from your IDE.

Typed Blocks
Build fully typed blocks with field definitions and automatically generated TypeScript interfaces.
CLI
Sync changes instantly: every save you make is pushed to the server via our dev commands.
Generate with AI
A code-first architecture means natively better AI support for generating and iterating on blocks.

Visual editing for your team

Content-First
For Marketers

Let your team focus on content, not code.

Live Preview
Add blocks and fill in fields while seeing your changes reflected in real time.
Reusable Content
Blocks you create for one email can be reused across campaigns: no need to rebuild.
Consistent Quality
Content always renders correctly according to the design, reducing last-minute layout surprises.

Pricing

Plans That
Scale With You

300Contacts

Starter
Free
For individuals
- Up to 300 contacts
- Typed blocks
- CLI
- Live preview
- Ticket Support
Pro
$20
Per workspace / month
- Up to 1000 contacts
- 5 Team Seats
- Ticket Support
- Same as Starter
Scale
$35
Per workspace / month
Estimated for 300 contacts
- Scale with your needs
- Unlimited Team Seats
- Priority Support
- Same as Pro

Compare

Built For
Both Sides Of The Stack

Typed blocks owned in your repo
Celaro
Mailchimp
Resend
Non-technical teammates can ship content
Celaro
Mailchimp
Resend
CLI workflow & sync from your IDE
Celaro
Mailchimp
Resend
Consistent layouts from reusable blocks
Celaro
Mailchimp
Resend
Version control your email structure
Celaro
Mailchimp
Resend
AI-friendly block schema
Celaro
Mailchimp
Resend
No formatting drift between campaigns
Celaro
Mailchimp
Resend

Feature comparison across products
Features	CelaroNewsletters from your codebase	MailchimpEmail marketing	ResendDeveloper email API
Typed blocks owned in your repo
Non-technical teammates can ship content
CLI workflow & sync from your IDE
Consistent layouts from reusable blocks
Version control your email structure
AI-friendly block schema
No formatting drift between campaigns

Build once.
Send forever.

Work with your favorite tools

The CMS forNewsletters

Build a system of blocksand let your team send newsletters with confidence

Code-FirstFor Developers

Typed Blocks

CLI

Generate with AI

Content-FirstFor Marketers

Live Preview

Reusable Content

Consistent Quality

Plans ThatScale With You