Email Template Builder for Mailgun

Stop hand-coding the HTML for your Mailgun emails.

Mailgun is where your product’s email actually goes out. Getting a designed template that far usually means someone writing table layouts by hand and checking them in a dozen clients. Postcards removes that job: build the design visually, export it to Mailgun, and the markup is written for you. Already tested on every device and OS.
Try Postcards for Free
On any paid plan: generate it with AI Suite and export to Mailgun in one click.

Built visually, shipped to Mailgun as clean HTML.

Drag the blocks in, set the styles, check the mobile view. Postcards writes the responsive markup underneath, so nothing has to go back through a code review before it sends.

- Start from a prompt
  
  Describe the email you want and AI Suite builds the whole template in seconds: layout, copy, and clean HTML.
- Your brand, built in
  
  Import your logo, colors, and fonts straight from your website URL, so every template starts on-brand.
- Translate, rewrite, restyle
  
  Ask AI Suite to translate the whole template into any language, or rewrite and restyle any part of it.
- Export clean code anywhere
  
  Preview it in Gmail, Outlook, Apple Mail and Yahoo, then one-click export to your email platform or clean HTML.

1

Design it in the browser

Drag blocks into place, set the type and the colors, and watch it come together as you go. The part that usually waits on a front-end developer takes minutes.
2

Hand it to Mailgun

One click sends the finished design over as production-ready HTML. Nothing gets pasted into a code editor on the way there.
3

Authorize it once

Your first export asks for access to your Mailgun account. Postcards remembers it, so every export after that is just the button.
4

It’s in your templates

The design lands in Mailgun looking exactly like the preview — ready to test and send, or to keep as the base for the next one.

Full design control, then straight into Mailgun.

Every block has its own controls — padding, alignment, background, link colors, how it stacks on a phone. Thousands of product and marketing teams build their email this way.

AI Creation

Generate production-ready email templates from a single plain-language prompt, built around your brand assets.
AI Editing & Transformation

Restyle, restructure, translate, and convert whole templates through one prompt.
AI Design Analysis

Run a full design audit flagging contrast, alignment, consistency, and copyright issues.
AI HTML Import

Bring your existing HTML emails into Postcards and keep editing them right here. Available on paid plans.
AI Text Assistant

Shorten, expand, or rephrase any copy in the email to fit the space you have for it.
In-app Comments

Comment inside a project, @mention teammates, resolve threads, and get notified.
Switch Workspaces

Create as many Workspaces as you need, each with its own projects, members, and billing.
Email Client Preview

See how emails render in Gmail, Outlook, Apple Mail, and Yahoo across mobile and desktop. Available on paid plans.
Countdown Timers

Give a sale or a launch a visible deadline — drop in a countdown, set the date, style it to your brand.
MCP / API

Let Claude, Cursor, or ChatGPT reach your projects over MCP, or pull finished HTML from your own code with the API.
Gmail Promotions Tab

Stand out in Gmail’s Promotions tab with rich images, deals, and discount codes right in the inbox.
Project Management

Stay organized with accessible folders, backed up for your peace of mind.
Brand Presets

Effortlessly apply preset to fonts, buttons, colors, links, texts and beyond.
Custom Fonts Support

Upload custom fonts or pick from 1,900+ Google Fonts for your brand's identity.
Figma Plugin

Turn a Figma email design into a Postcards template without writing any code.
Share Preview Links

Send a private or public link to any project, so people can review it without an account.
Export to PDF, PNG & JPG

Save the finished design as a file when someone needs to sign it off outside email.
Email Templates Gallery

A diverse collection of pre-designed email templates for every occasion.
Real-Time Collaboration

Allows multiple users to work together on the same project seeing each other’s cursors.
Mobile Ready

Create fully responsive, retina-ready emails optimized for desktop and mobile viewing.
Modular System

Customize, arrange, and stack pre-made creative options for stunning designs.
Powerful Image Editor

Crop, resize, fine-tune, and apply creative filters directly in the new Image Library.
Version History

Securely access and restore previous files from anywhere with cloud backup.
Direct Email Preview

Send and verify templates directly through your or your teammate's email client.
Clean Code

We export the code that’s easy to understand and easy to change if you have to.
Global CDN Access

Your email’s images and fonts load fast everywhere, served by our global CDN.
External Image Support

Use external image links to self-host and keep your images under control.
Unlimited Exports

Unlimited exports for Pro users: Export as many templates as you or your customers need.
ESP Export

It’s just one magical click to export to your favorite email marketing tool.

10K+
companies use Postcards

4.7 out of 5 stars / 90 reviews

Korey Beaver

Marketing Operations Manager

Hands down the most intuitive email builder I've ever used. Here are a few reasons why:

• Drag-and-drop content modules are well designed and actually useful!
• In my experience, emails always export mobile-friendly.
• HTML is always clean and easy to modify after exporting.
• Very clean and snappy interface.
• Images hosted online with no manual management!
• Simple project/folder hierarchy.

And many more.

Caitlin Davies

Marketing and Client Relations Coordinator

I like that it is easy to use, and I don't need to know how to code. We send emails through Pardot, and I am easily able to export the HTML code and just paste it right into Pardot.

Murat Mutlu

Co-Founder/CEO at Marvel

We were looking for something that gave our marketing team more control over email layouts without having to deal with the complicated module builder in HubSpot. Postcards is super simple to use and means we can quickly create different emails for different segments.

Jason Pittock

Senior Sales Consultant at Ergeon

What do I like best? The clean designs!
From top to bottom they are flawless. When you communicate internally or externally to an audience, the initial impression and impact is created in the first couple of seconds. Design is paramount. Using Postcards has allowed me to send amazing emails to my customers and create that wow impact every time you open them.

Cutting edge design, and user friendly are just a few attributes of this stunning email builder. Well done Designmodo!

Prashant Shah

Have quite a knack for Marketing

I have been using Postcards to create email templates for over a year, and it's among my favourite tools that I've recommended to several marketers since I discovered it.

Michael Tchong

Founder of Ubercool Innovation

Postcards works the way all digital tools should work, easily and intuitively. Creating well-designed emails with Postcards is a breeze, which is quite a feat in a world of email clients.

Tyler McIntyre

Founder at Novo Bank

Postcards email builder is awesome. It allows us to design emails in minutes and know they work on all devices. It used to take our designers weeks to get them responsive with back and forth from our different teams.

Simon Brint

Marketing Manager at VoxSmart

Quite literally has revolutionised the way I do email. Saves me so much time not having to fiddle arounded with html for ages!

Giovanni Di Rossi

Designer, Marketing and Advertising

Postcards offers a wide range of options for customizing email templates, and their customer support team is readily available to assist with any issues that may arise. This level of support is uncommon in today's digital landscape, making Postcards a crucial tool for anyone who is serious about their email marketing strategy.

The drag and drop feature is user-friendly and easy to navigate. I also appreciate the ability to easily embed links into text and buttons, as opposed to other tools that require the use of HTML.

Francesco Cutolo

Design Systems Manager at Klarna

We currently use Postcard in our growth team and planning to spread it across all the organization. Templates never fail a check test on Litmus, really a great tool!

Lily Young

Marketing Director at Amigos de las Americas

We started using Postcards about a year ago, and since then, we've created some pretty dynamic email templates and print layouts! The interface is super easy to use and our emails got a much-needed refresh.

Start your next Mailgun email from a template.

Each one is responsive out of the box and editable down to the last block. Make it match your product, then send it over to Mailgun.
Mailgun Email Templates