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Feature highlights

Generate polished email templates from a single prompt

AI Template Generator

Start from a prompt — get a beautiful, responsive email instantly. Edit, preview, and export without ever touching a clunky email builder.

Developer-focused HTML and CSS editing environment

Developer-First HTML + CSS Editor

A developer-friendly editor with syntax highlighting, auto-complete, line numbers, word wrap, and auto-save. Choose spaces or tabs — we won’t judge.

Automated CSS inlining workflow for email compatibility

Bulletproof CSS Inliners

Automatically inlines and optimizes your CSS for maximum compatibility — so your emails render perfectly in Gmail, Outlook, Apple Mail, and beyond.

Responsive and dark-mode email preview interface

Responsive + Dark Mode Previewer

Preview how your email looks on desktop and mobile, in both light and dark mode. Share links with your team or clients — no screenshots required.

Collaborating on email projects with team workspaces

Team Accounts

Invite your whole team. Designers, marketers, and developers can work together in one shared workspace.

Configuring brand settings to keep every email on-brand

Brand Settings

Set your logo, company name, and brand color once. Every new template uses your approved branding automatically — consistent, every time.

Uploading email assets to Postdrop's global CDN

Image Upload + CDN

Upload, store, and serve images via Postdrop’s global CDN for lightning-fast delivery.

Exporting HTML emails to Mailchimp, HubSpot, and other ESPs

Export Anywhere

Download or paste your email into Mailchimp, Campaign Monitor, HubSpot, Klaviyo, Customer.io, OneSignal, Mailgun, SendGrid, and more.

Sending HTML email tests to teammates and clients

Send Test Emails

Test your HTML email templates with your team or clients before sending or importing them into your ESP.

How It Works

  1. 1

    Start with a prompt or template — AI generates your base design.

  2. 2

    Refine in the editor — tweak HTML, upload images, adjust styles.

  3. 3

    Preview, share, and export — test across devices and export ready-to-send HTML.

Stop sending emails that break

Designers, developers, and marketers spend hours fixing inconsistent HTML, broken layouts, and dark-mode bugs. Postdrop handles all that for you.

  • ✅ One approved logo, brand color, and template for every email
  • ✅ Preview instantly — no need to send test emails to yourself
  • ✅ Generate production-ready HTML with AI and CSS inliners
  • ✅ Share responsive previews with your team in seconds
Previewing HTML emails across Gmail clients

Simple plans for individuals and teams — start free, upgrade anytime.

Free

$0 / month

  • AI template generator
  • HTML & CSS editor
  • Preview & export anywhere
  • 3 templates, 10 tests/day
Start Free

Pro

$19 / month

  • Everything in Free
  • Brand settings & logo
  • Image upload & CDN
  • Dark mode preview
  • 20 templates, 50 tests/day
Upgrade to Pro

Team

$49 / month

  • Everything in Pro
  • Invite team members
  • Priority support & onboarding
  • Advanced collaboration features
  • 100 templates, 100 tests/day
Upgrade to Team

Created by experts who've lived the pain of email development

Postdrop was built by experienced product and design leaders who’ve spent years working with email, messaging, and developer tools. Our founders have over 20 years’ experience in software development, working in the San Francisco Bay Area for successful messaging companies including Mailgun and OneSignal, and open-sourcing email tools for developers with one of the most popular projects on GitHub with over 20,000 stars.

Lee Munroe, Postdrop founder

Stop fixing broken HTML. Start building better emails — powered by AI.