Listmonk vs Mailtrap: 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.
Mailtrap
Mailtrap is an email testing and delivery platform that helps developers test, send, and track emails safely before reaching real users.
Listmonk
Listmonk is a free, open-source newsletter and mailing list manager that runs on your own server for complete data control.
Mailtrap
Mailtrap is an email testing and delivery platform that helps developers test, send, and track emails safely before reaching real users.
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
Mailtrap
Safe email testing with sandbox environment
Email API and SMTP for sending real emails
HTML validation across email clients
Spam score checking before sending
Automated testing through API integration
Team sharing and collaboration tools
Multiple sandbox inboxes for different projects
Detailed delivery and engagement analytics
Support for all programming languages
Email template management and storage
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.
Mailtrap
Mailtrap offers separate pricing for Email API/SMTP and Email Sandbox to match different needs.
For Email API/SMTP, the Free plan includes 3,500 emails per month with 1 domain and 3 days of logs. The Basic plan costs $15 monthly for 10,000 emails with 5 domains and 5 days of logs. The Business plan at $85 monthly offers 100,000 emails, up to 3,000 domains, 15 days of logs, and a dedicated IP address for better delivery. The Enterprise plan starts at $750 monthly with 1,500,000 emails and 30 days of logs.
For Email Sandbox, the Free plan provides 50 test emails monthly. The Basic plan costs $17 monthly for 500 test emails. The Team plan at $42 monthly includes 5,000 test emails and chat support. The Business plan costs $123 monthly for 50,000 test emails. The Enterprise plan at $498 monthly provides 5,000,000 test emails with priority support and single sign-on.