Compare software

Poste.io vs Modoboa: catalog facts
Poste.io	Modoboa
Freemium Free for personal use with paid licensing for larger deployments.	Free Free and open source, self-hosted.
Linux, Self-hosted	Linux, Self-hosted
Single Docker container simplifies deployment of a full mail stack Includes web admin, webmail, and TLS handling out of the box	Simplified web UI lowers the barrier to running a full mail platform Open source and self-hosted, keeping mail data under your control
Free tier is limited, with paid licensing for larger deployments Requires Docker knowledge and a server to run	Requires a Linux server to install and maintain Smaller community than some larger self-hosted mail projects
Self-hosted	Self-hosted
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.