Plunk

Key Features

• Transactional Emails
  Trigger fast, reliable emails directly from your application’s API, ideal for sign-ups, password resets, and critical user notifications.

• Automations
  Create powerful, repeatable workflows based on user behavior. From onboarding sequences to re-engagement campaigns, automate with ease.

• Broadcast Campaigns
  Send newsletters, product updates, and announcements to large audiences without worrying about scaling or delivery issues.

• Open-Source Architecture
  Built in the open, Plunk offers transparency, flexibility, and the ability to customize or self-host as needed.

• Simple, Usage-Based Pricing
  Pay only for the emails you send. No inflated contact-based pricing or hidden tiers.

• Privacy-First Infrastructure
  All data is hosted and processed in the EU, aligning with strict privacy and GDPR standards.

• Responsive Email Editor
  Design beautiful, mobile-friendly emails in minutes, or use your own HTML and trust Plunk to handle compatibility across email clients.

• Unified Platform
  One interface, one API, and one place to manage all your email needs. No more juggling different tools.

The Open-Source Email Platform You’ve Been Waiting For

Email remains the backbone of digital communication, from account confirmations and password resets to newsletters and user onboarding. But managing emails often means bouncing between multiple services with conflicting APIs, inconsistent pricing, and scattered dashboards.

Plunk changes that.

Built on top of AWS SES and designed with developers in mind, Plunk is an open-source email platform that merges transactional, marketing, and broadcast capabilities into a single, cohesive solution. Whether you’re a solo developer or scaling a product to millions, Plunk gives you the tools to do it all, without the headaches.

A Better Way to Send Emails

At its core, Plunk simplifies how emails are sent and managed. You can trigger transactional emails directly from your API, automate behavior-driven messages, or broadcast announcements to your entire user base. All from one place.

Gone are the days of integrating separate tools for different email needs. No more juggling SendGrid for transactional messages, Mailchimp for campaigns, and Zapier for automation. With Plunk, everything works together, seamlessly.

Built for Action

Plunk doesn’t just send emails. It helps you react to your users' behaviors in real time. Send a welcome email the moment a new user signs up. Start an onboarding flow automatically when they open that email. Deliver targeted messages when specific events are triggered. These aren't just features, they're workflows you control, from start to finish.

Transparent Pricing That Makes Sense

You shouldn’t have to pay for contacts you’re not actively engaging with. Plunk charges based on usage, not bloated subscriber lists. At just $0.001 per email, it's one of the most cost-effective options on the market.

For comparison:

• Mailchimp: $0.004/email
• SendGrid: $0.002/email
• Mailgun: $0.003/email

These prices are based on plans with comparable features, assuming a volume of 10,000 emails per month.

Privacy Comes Standard

Data privacy isn't an afterthought, it’s baked into everything Plunk does. All data is hosted, stored, and processed within the EU, aligning with GDPR standards and ensuring your users’ data remains safe and private.

Built in the Open

Plunk is proudly open-source. That means you can see what’s happening under the hood, contribute if you like, and trust the platform's transparency. There’s no black box here, just clean code and clear intentions.

Works Where It Matters

Responsive design isn’t just a bonus, it’s a necessity. Plunk includes a robust email editor that makes creating responsive emails simple, even for Outlook. If you prefer to bring your own HTML, Plunk will take care of making sure it looks great on every client.

Try Plunk for Free

Whether you're just getting started or looking for a serious alternative to legacy tools, Plunk offers a compelling new way to manage your email. Clean, powerful, and open, it's the all-in-one platform that lets you build better email experiences.