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THE MODERN EMAIL BUILDER
Design Better Emails.
Ship Them Faster.
Create beautiful, responsive emails with a powerful visual editor, AI-powered content tools, and production-ready MJML & HTML export. Build from scratch or start with a template — then use your emails with the ESP you already love.
No credit card required
AI-powered
Responsive by default
MJML + HTML export
Works with any ESP
app.postbrix.com
MJML export
HTML export
Responsive layouts
Reusable components
AI assistance
Template library
Any ESP workflow
Export to the email service provider you already use
EMAIL CREATION, SIMPLIFIED
Your Email Workflow, Without the Email-HTML Headache.
Design, refine, and export responsive emails without rebuilding email layouts from scratch or fighting responsive email code.
Design visually
Drag blocks onto a canvas — text, images, buttons, columns, dividers, and more. Start from a template or a blank canvas.
Refine with AI
Generate and refine headlines, body copy, and email content with built-in AI assistance. Use your brand settings for consistent output.
Export anywhere
Export clean MJML or fully inlined HTML and use your email with the ESP or email platform you already use.
CORE CAPABILITIES
Everything You Need to Build Production-Ready Emails.
PostBrix handles responsive layouts, cross-client compatibility, and clean code output — so your team can focus on content and conversion.
Visual Drag & Drop Builder
Build email layouts visually with text, images, buttons, columns, dividers, and reusable blocks — without writing HTML.
MJML + HTML Export
Export production-ready MJML or fully inlined HTML for use in your existing email workflow.
<mj-section>
<mj-column>
<mj-text>Welcome</mj-text>
</mj-column>
</mj-section>Responsive by Default
Build layouts designed for desktop and mobile without manually managing responsive email CSS.
Reusable Components
Save headers, footers, CTAs, and other brand elements and reuse them across projects.
AI-Powered Content
Generate and refine email copy faster with built-in AI assistance.
Template Library
Start from professionally designed responsive templates and customize them to match your brand.
WHY POSTBRIX
A Better Way to Build Email.
Focus on your message and campaign strategy instead of fighting complex email HTML tables and responsive client hacks.
Traditional Workflow
- Design mockups in Figma or Sketch
- Hand off to developers to write nested HTML tables
- Fix broken desktop and mobile client quirks manually
- Re-inline CSS and patch Outlook rendering issues
- Upload brittle code to ESP and hope it renders
High friction, multi-day turnarounds, and fragile layout bugs.
Streamlined
PostBrix Workflow
- Design visually with responsive blocks or starting templates
- Refine copy and structure with AI assistance
- One-click export of clean MJML or inlined HTML
- Send immediately through the ESP you already use
Clean visual workflow, zero vendor lock-in, and reliable rendering.
BUILT FOR EVERYONE
Built for Everyone Who Builds Emails.
Whether you design, code, market, or build for clients, PostBrix removes the bottlenecks between visual creation and production-ready code.
Marketing & Growth
Marketers
Create newsletters, campaigns, lifecycle emails, and promotional emails without waiting for engineering support.
Tailored workflow included
Visual Design
Designers
Turn visual ideas into responsive email layouts with reusable components and production-ready output.
Tailored workflow included
Engineering
Developers
Export clean MJML and HTML and integrate email creation into your existing development workflow.
Tailored workflow included
Product & Lifecycle
SaaS Teams
Create onboarding, transactional, product update, lifecycle, and marketing emails from one workflow.
Tailored workflow included
Client Work
Agencies
Build client emails faster, reuse brand components, manage projects, and hand off clean code.
Tailored workflow included
Startups & Solo
Founders & Small Teams
Start from a template, customize it quickly, and ship professional emails without building an email production workflow from scratch.
Tailored workflow included
FOR DEVELOPERS
Design Visually. Code When You Need To.
PostBrix gives marketers a visual workflow and developers production-ready output. Export MJML or fully inlined HTML, edit the output when needed, and integrate email production into your existing workflow.
- Export clean, human-readable MJML or fully inlined HTML
- Programmatic rendering via standard REST API
- No proprietary lock-in — your email code works with any ESP
template.mjml
<!-- Clean, standards-compliant MJML -->
<mj-section>
<mj-column>
<mj-text>
Welcome to your product
</mj-text>
</mj-column>
</mj-section>Output: Inlined HTML & MJML✓ 100% ESP Compatible
FOR MARKETERS & CREATORS
Move From Idea to Campaign-Ready Email Faster.
Create professional email layouts without starting from HTML. Use templates, reusable blocks, AI-assisted copy, and your brand settings to move faster from idea to finished email.
Weekly / Monthly
Newsletter
Editorial layouts, curated roundups, and digest cards designed for engagement.
View templates
Product
Product Update
Feature release spotlights, changelog highlights, and release walkthroughs.
View templates
Lifecycle
Welcome Email
Onboarding sequences that introduce new users and drive activation.
View templates
Growth
Promotion
High-converting discount announcements, flash sales, and seasonal campaigns.
View templates
Communication
Announcement
Company milestones, event invites, webinar reminders, and service advisories.
View templates
Automated
Lifecycle Email
Behavior-triggered milestone celebrations, re-engagement, and renewal notices.
View templates
ESP COMPATIBILITY
Your Email Platform. Your Code. Your Choice.
PostBrix does not lock your emails into a proprietary sending platform. Export your email and use it with the ESP you already use.
M
DocsMailchimp
Marketing & Newsletters
H
DocsHubSpot
CRM & Automation
S
DocsSendGrid
Transactional & Marketing
B
DocsBrevo
ESP & Marketing
P
DocsPostmark
Transactional Delivery
A
DocsAmazon SES
Cloud Infrastructure
K
DocsKlaviyo
E-commerce & Lifecycle
C
DocsCustomer.io
Product Automation
A
DocsActiveCampaign
Marketing Automation
M
DocsMailgun
Developer Delivery
Works with any email sending platform that accepts HTML or MJML templates. Company names are shown as compatibility examples only.
Read the ESP export guideFAQ
Common questions
Everything you need to know about PostBrix.
Is PostBrix an email sending platform?
No. PostBrix is an email builder, not a sender. You design your emails here, export the HTML or MJML code, and then send them through your own ESP — Mailchimp, Brevo, HubSpot, SendGrid, or any other platform you already use.
Can I export MJML or HTML from PostBrix?
Yes. PostBrix exports both. MJML is the open-source email markup language that generates cross-client HTML. Inline HTML is the fully processed version you can paste directly into any ESP. Both export options are available on every plan.
Do I need coding skills to use PostBrix?
No coding required. The drag-and-drop editor handles layout, styling, and responsive formatting for you. If you're a developer, you can also edit MJML directly or pull the output into your own pipeline.
Does PostBrix work with Mailchimp, Brevo, HubSpot, or other ESPs?
Yes. PostBrix exports portable email code that can be used with email platforms that accept HTML.
Is PostBrix good for agencies?
PostBrix supports workflows for teams and agencies, including projects, workspaces, reusable brand elements, previews, and production-ready export, depending on the plan.
What does the free plan include?
The Free plan includes 3 projects, 1 workspace, 5 monthly exports, 5 daily downloads, 3 daily test emails, 10 lifetime AI credits, and full access to our drag-and-drop builder and template library. No credit card required.
READY TO BUILD?
Build Your Next Email in Minutes.
Start from a blank canvas or a professionally designed template. Create your email visually, refine it with AI, and export production-ready MJML or HTML.
No credit card requiredFree plan availableExport to any ESP