MailForge
Open-source email template platform

Email templates, powered by AI

A self-hosted platform for teams that need to create, preview, and send beautiful email templates without engineering bottlenecks. Rich editor, live preview, AI copywriting, and test sending — all in one place.

editor.tsx — MailForge
Saved
BIUH1H21.

{{company_name}} — Welcome aboard

Hi {{first_name}},

Thanks for signing up for {{product_name}}. We are excited to have you on board.

Here is what you can do next:

  • Complete your profile setup
  • Explore the dashboard and create your first project
  • Invite your team members to collaborate
Get started

How it works

Three steps from blank page to sent email

01

Write with placeholders

Use {{variable}} syntax to personalize every email. The editor highlights placeholders and suggests values from your library.

02

Preview with real data

Apply JSON mock data to see exactly how the email renders. Toggle between desktop and mobile views instantly.

03

Test-send before you ship

Send a real email to your inbox via Resend. Full send history is logged so you know what went out and when.

Everything you need to ship emails

A complete toolkit for modern email teams

Rich Editor

Write with tables, images, code blocks, colors, and placeholders. Full Tiptap-powered editing experience.

AI Assistant

Generate, rewrite, shorten, or improve content. Smart tone control and contextual suggestions.

Live Preview

See desktop and mobile renders instantly. Send test emails to your inbox with one click.

Preview

See it before you send it

Apply JSON data to your template and see exactly how each email renders. Toggle between desktop and mobile viewports. Every placeholder is highlighted in the editor and replaced with your test data in the preview.

  • Real-time preview as you type
  • Desktop and mobile viewports
  • JSON mock data for placeholders
  • Test send to your inbox
Preview
DesktopMobile
Subject: Welcome to Acme

Welcome to Acme

Hi Sarah,

Thanks for signing up for Acme. We are excited to have you on board.

Get started

Sent via MailForge

Built for teams that ship emails

From marketing campaigns to transactional notifications

Marketing teams

Design and iterate on campaigns without waiting for engineering. Preview and test in minutes.

Developers

Define placeholder schemas, seed test data, and integrate with any email provider. Open-source and self-hosted.

Product builders

Ship onboarding flows, transactional emails, and notifications with confidence. Full control over every pixel.

Built with modern tools

Self-hosted on your own infrastructure

Supabase
Next.js
Tailwind CSS
TipTap Editor
Resend
OpenRouter AI

Ready to ship better emails?

Self-hosted, full control over your data. Get started in minutes.