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Listmonk vs Postmark
Postmark focuses on transactional email delivery as a service; listmonk combines transactional and marketing emails on-premise.
ListmonkSelf-hosted newsletter and mailing list manager
PostmarkTransactional email delivery for appsWhich to pick
Pick Listmonk if you want…
- Self-hosted email campaigns and transactional mail
- A free, open-source tool
- Integrations with Go, Vue or Buefy (on Listmonk's list, not Postmark's)
Pick Postmark if you want…
- Fast, reliable transactional email
- Transactional email service
- Integrations with Python, Ruby or PHP (on Postmark's list, not Listmonk's)
Side by side
- What it is
- Listmonk:Self-hosted newsletter and mailing list manager for campaigns and transactional messages.
- Postmark:Postmark is an email delivery service for sending transactional and marketing emails via API or SMTP.
- Best for
- Listmonk:Self-hosted email campaigns and transactional mail
- Postmark:Fast, reliable transactional email
- Who it’s for
- Listmonk:Developers and teams needing on-premise email marketing and transactional mail.
- Postmark:Developers and teams needing reliable email delivery.
- Pricing
- Listmonk:Free
- Postmark:Freemium
- Plans
- Listmonk:—
- Postmark:Free $0.00/mo · Basic $15.00/mo per month · Pro $16.50/mo per month · Platform $18.00/mo per month
- Open source
- Listmonk:Yes, 23,714 GitHub stars
- Postmark:—
- Works with
- Listmonk:Go, Vue, Buefy, Docker, SMTP, SMS, WhatsApp, FCM
- Postmark:Python, Ruby, PHP, cURL, SMTP
Listmonk features
- One-binary deployment. Single binary with low CPU and memory usage runs on all major OSes.
- High-performance queues. Multi-threaded, multi-SMTP queues with rate limiting for millions of emails.
- SQL-based segmentation. Query and segment subscribers using SQL expressions.
- Rich templating. Go templating language with drag-and-drop builder, Markdown, HTML and 100+ functions.
- Built-in analytics. Visualize campaign performance, bounces, top links and more.
- Transactional API. Simple API to send transactional messages via email, SMS, WhatsApp or other messengers.
- Extensible webhooks. Messenger HTTP webhooks for SMS, WhatsApp, FCM notifications and custom channels.
- Full privacy & auth. OIDC SSO, granular roles, permissions and API tokens; media library with S3-compatible backend.
Postmark features
- Industry-leading deliverability. Ensures emails reach inboxes quickly with vetted IPs and strict spam controls.
- Message Streams. Separates transactional and marketing emails on parallel infrastructures.
- Inbound email processing. Converts inbound emails to JSON and forwards via webhooks.
- Detailed analytics. Provides bounce data, open/link tracking, and activity retention.
- Official SDKs. Libraries for many languages (Node, Python, Ruby, PHP, .NET, etc.) for easy integration.
- Sandbox mode. Test email sending without affecting real recipients.
Listmonk vs Postmark FAQ
Is Listmonk or Postmark free?+
Listmonk is free. Postmark has a free plan; paid plans start at $15/month (Basic).
Which is cheaper, Listmonk or Postmark?+
Listmonk is free, so it costs less. Postmark starts at $15/month (Basic).
Is Listmonk or Postmark open source?+
Listmonk is open source (knadh/listmonk on GitHub, AGPL-3.0 license). DevHunt has no public source repository on record for Postmark.
Do Listmonk and Postmark integrate with the same tools?+
Partly. Both list SMTP. Listmonk also lists Go, Vue, Buefy, Docker and 4 more; Postmark also lists Python, Ruby, PHP and cURL.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.