What is Haraka?
A free, open-source SMTP server written in Node.js that efficiently handles thousands of concurrent email connections and allows developers to extend functionality through a modular plugin system written in JavaScript.
Haraka pricing
We don't have Haraka's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What Haraka does
The capabilities that matter for email delivery infrastructure, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Deployment model
- Self host
- Rest API sending
- -
- Smtp relay
- ✓
- Inbound email parsing
- ✓
- Dedicated ip available
- -
- Bounce complaint handling
- -
- Open click tracking
- -
- Marketing template builder
- -
- Webhook event streaming
- -
- HIPAA compliant
- -
- SOC2 type ii
- -
- ISO 27001
- -
- Pricing model
- -
Platform & deployment
Independently observed- CLI
- On-premise
- Self-hosted
Security & compliance
Known vulnerabilities: 2 (1 in the last 12 months), max severity CRITICAL sourcea count reflects scale & disclosure, not quality
Haraka alternatives
Other email delivery infrastructure we track, ranked by the same independent score.
- Twilio SendGridEmail delivery platform for sending campaigns and transactional messages at scalelow · 27%
- MailjetEmail platform combining API, SMTP relay, and marketing tools for teamsmedium · 66%
- LoopsEmail marketing and lifecycle automation platform for SaaS teamsmedium · 54%
- MailtrapCloud email API and SMTP service designed for developers and product teamslow · 43%
- SparkPostDeveloper API for sending emails, SMS, WhatsApp, and voice messages across 190+ countrieslow · 26%
- Postallow · 4%
Compare Haraka
Side by side against other email delivery infrastructure, attribute by attribute, with a source on every value.
The Vioscale score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Haraka, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Pricing transparency | 80 | 0.08 | 6.7 | ✓ |
| Price level | 100 | 0.05 | 5.2 | ✓ |
| Release cadence | 78 | 0.05 | 4.0 | ✓ |
| Capabilities | 46 | 0.08 | 3.8 | ✓ |
| Security score | 68 | 0.04 | 2.9 | ✓ |
| Stars | 71 | 0.03 | 1.8 | ✓ |
| Development activity | 19 | 0.09 | 1.8 | ✓ |
| Dependent projects | 23 | 0.06 | 1.4 | ✓ |
| Reliability | 0 | 0.07 | 0.0 | - |
| Integrations | 0 | 0.09 | 0.0 | - |
| Security posture | 0 | 0.07 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 3 | mediumsource · 2026-08-26 · 65% |
Adoption
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Smtp relay: Yes · Deployment model: self_host · Inbound email parsing: Yes | mediumsource · 2026-08-21 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | JavaScript | highsource · 2026-08-26 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-08-26 · 95% |