OpenEMM
7.6#17 in email marketing softwareFree planFree planWebAPILinuxmacOS
VisitOpenEMM vs Substack
What both publish
| Fact | OpenEMM | Substack |
|---|---|---|
| Audience segmentation | Yes | Yes |
| Company size | LinkedIn lists AGNITAS AG in the 11–50 employee range. | LinkedIn lists 51–200 employees, while Crunchbase lists headcount in the 101–250 range. |
| Email automation | Yes | Yes |
| Free plan | Yes | Yes |
| Integrations | The documentation identifies Make and n8n connectors, while the platform also supports data exchange through web services, HTTP endpoints, and imports or exports. | Official integrations include RSS, podcast distribution to Apple and Spotify, Google Analytics 4, Google Tag Manager, X and Facebook pixels, Google site verification, YouTube and LinkedIn account connections. |
| Privacy | AGNITAS describes OpenEMM as GDPR-compliant and says users choose where to operate it, with source-code access for security inspections and customization. | Substack's privacy policy says it endeavors to protect personal information but cannot guarantee complete security. |
| Purpose | OpenEMM is web-based open-source software for email marketing and marketing automation, including newsletters and transactional or date-driven emails. | Substack is a publishing platform for writers, creators, and subscribers. |
| Rating on G2 | 3.5 out of 5 from 1 review shown for AGNITAS; G2 says there are not enough reviews to provide buying insight. | 4.3 out of 5 from 17 reviews |
OpenEMM plans
- OpenEMMFree
Substack plans
- Free publishingFree
- Free to startFree
- Custom domain$50, paid once
- Paid subscriptions—
Pick OpenEMM if…
OpenEMM may suit SMEs, associations, and clubs that want email marketing and automation and can work with its reduced feature range. It is also suited to users able to handle self-hosting and the stated server requirements.
Pick Substack if…
Substack suits writers, journalists, podcasters, video creators, experts, educators, and media companies building a direct subscriber audience. It is useful for creators who want multiple media formats, audience discovery, segmentation, email automation, and paid subscription options.