SignalPost
6.5#118 in email marketing softwareFrom $19 a monthWebAPI
VisitSignalPost vs Substack
What both publish
| Fact | SignalPost | Substack |
|---|---|---|
| Audience segmentation | Yes | Yes |
| Email automation | Yes | Yes |
| Free plan | No | Yes |
| Integrations | The site says users can connect supported CRM, commerce, and analytics tools, and use API access and webhooks; it does not name specific integrations on the opened page. | 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. |
SignalPost plans
- Starter$19 a month
- Growth$49 a month
- Pro$99 a month
- Agency$249 a month
Substack plans
- Free publishingFree
- Free to startFree
- Custom domain$50, paid once
- Paid subscriptions—
Pick SignalPost if…
You want what its maker publishes above — check its page for the details.
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.