About
Plunk is an open-source email platform for transactional email, marketing campaigns, and workflow automation. It provides a REST API, SDKs for Node.js and Python, custom domains with DKIM, inbound email handling, analytics, and audience segmentation. The service can be self-hosted with Docker Compose or used as a hosted email sending platform.
The hosted plan includes 1,000 emails per month on the free plan, unlimited contacts, and Plunk branding on emails. Paid usage is billed at $0.001 per email with no base fee and no contact limits. The product is aimed at developers and SaaS teams that need one system for receipts, password resets, newsletters, and automated email sequences.
- 1,000 emails per month free
- Unlimited contacts on free plan
- Transactional and campaign email
- Workflow automation with branching logic
- Custom domains with DKIM
- Inbound email webhooks
- REST API and SDK access
- Self-hostable via Docker Compose
What's included in the free tier
- 1,000 emails per month.
- Transactional emails for receipts, password resets, and event-driven email.
- Workflow automation with event-triggered sequences, delays, conditions, and branching logic.
- Campaign broadcasts for newsletters and announcements.
- Custom domains with automatic DKIM, SPF, and DMARC setup.
- Click and open tracking.
- Unlimited contacts.
- Plunk branding on emails.
See Plunk pricing for current limits.
