Both tools have similar popularity levels, with Listmonk having 22,704 stars and Postal having 16,724 stars on GitHub. In terms of developer contributions, Listmonk has 2,492 forks, indicating strong developer engagement.

Listmonk is growing faster, adding 638 stars in the last 30 days (+2.9%) against adding 58 stars for Postal (+0.3%). Listmonk is both larger and pulling further ahead.

Both projects show recent activity, with Listmonk last updated 3 hours ago and Postal 7 days ago.

Both tools share common technology foundations, being built with JavaScript, Bash, SCSS. However, they differ in their additional technology choices: Listmonk uses CSS, Typescript, JSX, Python, Golang, Vue while Postal leverages Ruby, CoffeeScript.

Postal has been in development longer, starting 9 years ago, compared to Listmonk which began 7 years ago. This 2.2-year head start suggests Postal may have more mature features and established processes.

Postal uses the MIT license, which is more permissive than Listmonk's AGPL-3.0 license, potentially offering greater flexibility for commercial use and integration.

Both tools serve similar use cases in Email Marketing & Newsletters. However, they also have distinct specializations: Listmonk also focuses on Marketing Automation while Postal extends into Email Platforms.

Both Listmonk and Postal offer self-hosting capabilities, giving you full control over your data and infrastructure.