Open-source email platform for transactional, marketing, and automation
Send Newsletters Without SaaS Lock-In
Stage
Not given
Established
Founded
Not given
Not given
Based in
EU
Not given
Pricing model
Not given
one-time
Pricing
Free plan: 1,000 emails per month with Plunk branding. Paid plan: $0.001 per email with no branding. Unlimited contacts on both plans.
Sendy software for $69 one-time fee. Bundle with AI Assistant for $39 (regular $49). Installation service for $79. Email sending via Amazon SES costs $1 per 10,000 emails.
Key features
Transactional email sending via API and SMTP
Workflow automation with event triggers and branching
Campaign broadcasts to segments or full contact list
Dynamic audience segmentation
Email analytics with opens, clicks, bounces tracking
Inbound email reception and reply handling
SMTP support for existing clients and frameworks
MCP server for AI agent integration
Visual email editor with HTML sync
Custom domain setup with automatic DKIM, SPF, DMARC
Drag & drop email editor
Live campaign reports
AI Assistant for generating newsletters and subject lines
List segmentation
Autoresponders and drip campaigns
White-labeled client accounts
Custom fields and personalization
Bounce and complaint handling
Rules and webhooks
Third-party integrations and Zapier
What makes it different
All features included on every plan with no tiers or add-ons
Fully open-source and self-hostable on own infrastructure
Pay only for emails sent, never per contact
One unified contact list for all email types
Less than five minutes to send first email
Self-hosted with no lock-in or dependency on external platforms
Uses Amazon SES for reliable email delivery infrastructure