Side by side
Groups.io vs listmonk
Both stand on mailing list management software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidiPhoneWeb
Visit Groups.io 
Free plan Open source APILinuxMac+3
listmonk offers extensive list management, campaign analytics, template options, and APIs without a software fee. Its self-hosted approach and PostgreSQL requirement make infrastructure a key consideration.
Visit listmonkThe facts
| Groups.io | listmonk | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Yes |
| Runs on | Android, iPhone, Web | API, Linux, Mac, Self-hosted, Web, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 3 | 2 |
| Maker | Not published | Not published |
| Website | groups.io | listmonk.app |
| On mailing list management software | #6 of 21 | #2 of 21 |
Groups.io: what it does well
listmonk: what it does well
- Free and open source under the AGPLv3 license.
- Supports single- and double-opt-in lists.
- Segments subscribers with SQL expressions.
- Includes campaign analytics and flexible template formats.
- Dashboard features are available through HTTP APIs.
What to know first
- Requires PostgreSQL version 12 or later.
- Self-hosted software requires a PostgreSQL database.
Alternatives to Groups.io Alternatives to listmonk The whole list