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Plunk
Email Marketing Automation

Plunk

Send transactional emails, run marketing campaigns, and automate workflows — all open-source and self-hostable. $0.001/email, no contact limits.

Plunk screenshot

Key Features

Workflow Automation

Visual builder for complex email sequences with triggers, delays, and conditional logic.

Dynamic Segments

Real-time audience segmentation based on contact data and behavior.

Campaign Management

Broadcast emails with scheduling and performance tracking.

Analytics

Detailed metrics on opens, clicks, bounces, and conversions across campaigns.

Custom Domains

Brand consistency with DKIM authentication and custom sending domains.

Use Cases

Transactional emails
Marketing campaigns
Workflow automation

Videos

Pricing Plans

Free Plan
$0.00
Paid Plan
$0.001/email