Plunk

Plunk is a complete email platform that helps you send three main types of emails from one place. First, there are transactional emails - the automatic messages your app sends like password resets or order confirmations. Second, marketing automations - email sequences that trigger based on what your users do. Third, broadcast campaigns - newsletters and updates you send to many people at once.

The platform is open-source, which means the code is public and you can even host it yourself if you want. It runs on Amazon's email service, which makes it reliable and fast. Plunk offers a clean dashboard where you can create emails, track who opens them, and manage your contact list all in one spot.

• Three email types in one platform: transactional, automation, and broadcast

• Open-source with self-hosting option

• Built on Amazon Web Services for reliability

• Simple API integration with multiple programming languages

• Responsive email editor and HTML import

• Unlimited contact storage with segmentation

• Real-time tracking and analytics

• Custom domain support

• Usage-based pricing at $0.001 per email

• Free plan with 3,000 emails monthly