# 6 Best Open Source Alternatives for Sendinblue

Canonical: https://caniforkit.com/sendinblue
Last updated: 2026-11-07

Looking for the best open source alternative for Sendinblue? Compare 6 verified free and open source alternatives to Sendinblue (Listmonk, Plunk, Dittofeed) with license details, self-hosting requirements, and practical trade-offs.

## Sendinblue Overview & Subscription Cost
- **Product**: Sendinblue
- **Category**: [seo & marketing](https://caniforkit.com/category/seo-marketing)
- **Paid Subscription Price**: $49/month per seat
- **1-Seat Annualized Cost**: $588/year
- **5-Person Team Annualized Cost**: $2,940/year
- **10-Person Team Annualized Cost**: $5,880/year
- **Can I Vibe-Code / Rebuild It Myself?**: NO (use a free alternative, save the tokens)
- **Rebuild Verdict**: Instead of paying recurring SaaS fees for Sendinblue or rebuilding it from scratch, deploy one of the 6 battle-tested open-source alternatives like Listmonk.

## Verified Free & Open Source Alternatives

| Alternative | Type | License | Runs On | GitHub Stars | Head-to-Head |
| --- | --- | --- | --- | --- | --- |
| [Listmonk](https://caniforkit.com/fork/listmonk) | Open Source | AGPL-3.0 | Self-host | ★ 24.2k | [Compare vs Sendinblue](https://caniforkit.com/vs/sendinblue-vs-listmonk) |
| [Plunk](https://caniforkit.com/fork/plunk) | Open Source | AGPL-3.0 | Self-host | ★ 5.6k | [Compare vs Sendinblue](https://caniforkit.com/vs/sendinblue-vs-plunk) |
| [Dittofeed](https://caniforkit.com/fork/dittofeed) | Open Source | MIT | Self-host | ★ 3k | [Compare vs Sendinblue](https://caniforkit.com/vs/sendinblue-vs-dittofeed) |
| [Notifuse](https://caniforkit.com/fork/notifuse) | Open Source | AGPL-3.0 | Self-host | ★ 2.3k | [Compare vs Sendinblue](https://caniforkit.com/vs/sendinblue-vs-notifuse) |
| [Keila](https://caniforkit.com/fork/keila) | Open Source | AGPL-3.0+ | Self-host | ★ 2.3k | [Compare vs Sendinblue](https://caniforkit.com/vs/sendinblue-vs-keila) |
| [Hyvor Post](https://caniforkit.com/fork/hyvor-post) | Open Source | Open Source | Local | ★ 34 | [Compare vs Sendinblue](https://caniforkit.com/vs/sendinblue-vs-hyvor-post) |

## In-Depth Alternative Profiles

### Listmonk
- **Fork Page**: [Listmonk Profile](https://caniforkit.com/fork/listmonk)
- **Head-to-Head Comparison**: [Sendinblue vs Listmonk](https://caniforkit.com/vs/sendinblue-vs-listmonk)
- **Official Website**: https://listmonk.app/
- **Source Code Repository**: https://github.com/knadh/listmonk
- **License**: AGPL-3.0
- **Runs On**: Self-host
- **GitHub Stars**: 24.2k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Send email campaigns and transactional messages to millions of subscribers with a single high-performance binary backed by Postgres.
- **The Catch vs Sendinblue**: listmonk is fast and explicit about subscriber states, but it lacks Brevo's managed deliverability, broad automation suite, CRM-style contact tools, and polished visual workflow builder.
- **Installation**: Docker Compose or a single release binary plus PostgreSQL
- **Setup**: You still need a PostgreSQL database and a trustworthy SMTP/API sender with authenticated DNS.
- **Data Storage**: Subscribers, campaigns, templates, and analytics live in a PostgreSQL database on your server.

### Plunk
- **Fork Page**: [Plunk Profile](https://caniforkit.com/fork/plunk)
- **Head-to-Head Comparison**: [Sendinblue vs Plunk](https://caniforkit.com/vs/sendinblue-vs-plunk)
- **Official Website**: https://useplunk.com
- **Source Code Repository**: https://github.com/useplunk/plunk
- **License**: AGPL-3.0
- **Runs On**: Self-host
- **GitHub Stars**: 5.6k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Plunk unifies marketing, transactional, and broadcast emails into a single, complete solution for businesses of all sizes.
- **The Catch vs Sendinblue**: Plunk is developer-first and much thinner in visual audience management, CRM depth, segmentation tooling, and marketer-oriented reporting.
- **Installation**: Hosted signup, or the official Docker Compose stack
- **Setup**: Hosted use still needs domain authentication; self-hosting adds PostgreSQL, Redis, MinIO, Nginx or another proxy, exposed web and SMTP services, DNS, and ongoing deliverability work.
- **Data Storage**: The self-hosted stack stores core data in PostgreSQL, jobs and cache in Redis, and objects in MinIO; hosted data is kept in Plunk's EU infrastructure.

### Dittofeed
- **Fork Page**: [Dittofeed Profile](https://caniforkit.com/fork/dittofeed)
- **Head-to-Head Comparison**: [Sendinblue vs Dittofeed](https://caniforkit.com/vs/sendinblue-vs-dittofeed)
- **Official Website**: https://dittofeed.com/
- **Source Code Repository**: https://github.com/dittofeed/dittofeed
- **License**: MIT
- **Runs On**: Self-host
- **GitHub Stars**: 3k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, self-host, real ops
- **Summary**: Dittofeed offers low-code tools for message automation across multiple channels, including powerful segmentation and personalization features.
- **The Catch vs Sendinblue**: Dittofeed handles event-driven segments and journeys, but its Postgres-and-ClickHouse operating burden and narrower all-in-one analytics experience are worse than Bento's managed stack.
- **Installation**: Dittofeed Cloud or Docker Compose/Kubernetes self-host
- **Setup**: Docker Compose brings Postgres and ClickHouse, but the harder first step is instrumenting product events and connecting an email provider.
- **Data Storage**: Self-hosted identity and configuration data lives in PostgreSQL and event/segment data in ClickHouse; optional blob data can use object storage.

### Notifuse
- **Fork Page**: [Notifuse Profile](https://caniforkit.com/fork/notifuse)
- **Head-to-Head Comparison**: [Sendinblue vs Notifuse](https://caniforkit.com/vs/sendinblue-vs-notifuse)
- **Official Website**: https://www.notifuse.com
- **Source Code Repository**: https://github.com/notifuse/notifuse
- **License**: AGPL-3.0
- **Runs On**: Self-host
- **GitHub Stars**: 2.3k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Free open-source email platform for newsletters and transactional emails. Self-hosted alternative to Mailchimp with visual MJML editor, A/B testing, and analytics.
- **The Catch vs Sendinblue**: Notifuse is newer and narrower, without ActiveCampaign's mature CRM, predictive features, and thousand-plus integration ecosystem.
- **Installation**: Hosted signup, or one application container plus PostgreSQL for self-hosting
- **Setup**: Self-hosting still needs Docker, PostgreSQL, a public HTTPS endpoint, an SMTP or API sending provider, and correctly authenticated sending domains.
- **Data Storage**: Self-hosted contacts, campaigns, automations, and events live in PostgreSQL; files can use S3-compatible storage, and the configured email provider receives message payloads. Hosted data lives in Notifuse's cloud.

### Keila
- **Fork Page**: [Keila Profile](https://caniforkit.com/fork/keila)
- **Head-to-Head Comparison**: [Sendinblue vs Keila](https://caniforkit.com/vs/sendinblue-vs-keila)
- **Official Website**: https://keila.io
- **Source Code Repository**: https://github.com/pentacent/keila
- **License**: AGPL-3.0+
- **Runs On**: Self-host
- **GitHub Stars**: 2.3k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Self-hosted newsletter platform with powerful features, data protection, and full control over your mailing lists and campaigns.
- **The Catch vs Sendinblue**: Keila gives you a friendly campaign editor and tracking, but delivery reputation, SMTP configuration, backups, and upgrades become your responsibility rather than Campaign Monitor's.
- **Installation**: Keila Cloud signup or Docker image plus PostgreSQL
- **Setup**: Self-hosting requires Docker, PostgreSQL, a public HTTPS domain, and credentials for SMTP, SES, SendGrid, Mailgun, or Postmark.
- **Data Storage**: Self-hosted subscribers, campaigns, and job state live in PostgreSQL; uploaded campaign assets live on persistent server storage.

### Hyvor Post
- **Fork Page**: [Hyvor Post Profile](https://caniforkit.com/fork/hyvor-post)
- **Head-to-Head Comparison**: [Sendinblue vs Hyvor Post](https://caniforkit.com/vs/sendinblue-vs-hyvor-post)
- **Official Website**: https://post.hyvor.com/
- **Source Code Repository**: https://github.com/hyvor/post
- **License**: Open Source
- **Runs On**: Local
- **GitHub Stars**: 34
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: desktop, cross-platform, one-click install
- **Summary**: Create and send newsletters with complete privacy protection. No tracking, no data collection - just simple, clean email delivery with customizable templates and archive sites.
- **The Catch vs Sendinblue**: Community-driven open source project without dedicated enterprise SLAs.
- **Installation**: Clone https://github.com/hyvor/post or deploy with Docker Compose
- **Setup**: Download the native package or installer for your operating system.
- **Data Storage**: All application data lives locally on your own machine.

## Frequently Asked Questions

### What is the best free alternative to Sendinblue?
The top free alternative to Sendinblue is Listmonk (open source, AGPL-3.0). Send email campaigns and transactional messages to millions of subscribers with a single high-performance binary backed by Postgres. Other popular Sendinblue replacements include Plunk, Dittofeed, Notifuse.

### How much does switching from Sendinblue to a free alternative save?
Sendinblue starts at $49/month per seat ($588/year). Switching a 5-person team to a free alternative like Listmonk saves $2,940 per year in software subscription fees.

### What is the catch when switching away from Sendinblue?
While Listmonk replaces core Sendinblue features without subscription fees, the real-world trade-off is: listmonk is fast and explicit about subscriber states, but it lacks Brevo's managed deliverability, broad automation suite, CRM-style contact tools, and polished visual workflow builder.

## Related

- [seo & marketing Software Category Hub](https://caniforkit.com/category/seo-marketing)
- [All Paid SaaS Alternatives Index](https://caniforkit.com/alternatives)
- [Self-Hosted Software Directory](https://caniforkit.com/self-hosted)
- [Homepage](https://caniforkit.com)