Listmonk vs Postmark: Features, Pricing and User Reviews 2026
Compare features, pricing, reviews, and more to make an informed decision
Listmonk
Listmonk is a free, open-source newsletter and mailing list manager that runs on your own server for complete data control.
Postmark
Postmark is a fast and reliable email delivery service that helps businesses send transactional emails through SMTP and API integration.
Listmonk
Listmonk is a free, open-source newsletter and mailing list manager that runs on your own server for complete data control.
Postmark
Postmark is a fast and reliable email delivery service that helps businesses send transactional emails through SMTP and API integration.
Listmonk
Self-hosted with full data control
Unlimited subscribers and email sending
Drag-and-drop visual email builder
Multi-SMTP server support
Subscriber segmentation with SQL queries
Campaign analytics and reporting
Transactional email API
Bounce and webhook management
Template library with Go language
Privacy-compliant with GDPR tools
S3-compatible media storage
Open source under AGPLv3 license
Postmark
Fast email delivery to inbox in seconds
API and SMTP integration options
Pre-built responsive email templates
Detailed tracking and analytics
Message streams for email separation
Bounce and spam monitoring
Expert customer support team
DMARC security tools included
Webhook notifications for events
Multiple programming language libraries
Domain authentication assistance
Real-time delivery statistics
Listmonk
Listmonk is completely free to use because it is open-source software. There are no subscription fees, hidden costs, or limits on the number of subscribers or emails you can send. The software is licensed under AGPLv3, which means anyone can download, use, and modify it without paying anything.
However, you will need to account for your own infrastructure costs. This includes paying for a server or virtual private server (VPS) to host Listmonk, which typically costs between five and twenty dollars per month depending on your needs. You will also need an SMTP service to actually send the emails. Services like Amazon SES charge around ten cents per thousand emails, while others like SendGrid offer free tiers. Overall, running Listmonk costs a fraction of traditional email marketing platforms.
Postmark
Postmark offers clear pricing plans to fit different needs. Every account starts with a Free Developer Plan that includes 100 emails every month and never expires - perfect for testing or small projects.
The Basic Plan costs $15 per month and includes 10,000 emails. You can add more at $1.80 per 1,000 extra emails. This plan supports up to 4 users and 5 servers.
The Pro Plan at $16.50 monthly includes 10,000 emails with additional emails at $1.30 per 1,000. It offers up to 6 users, 10 servers, and includes inbound email features.
The Platform Plan costs $18 monthly for 10,000 emails, with extras at $1.20 per 1,000. It includes unlimited users, servers, and all advanced features.
High-volume senders can contact their team for custom pricing with dedicated IP addresses and priority support.