EmailOctopus vs Substack
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
EmailOctopus is the stronger AI pick in Email Marketing: it has a visibility score of 3.1 versus 0 for Substack.
Choose EmailOctopus if…
- You want the brand AI engines rank higher (3.1 vs 0)
- You need Says it is fully GDPR compliant or Registered with the UK ICO coverage
- Budget-friendly pricing
- Handles large subscriber lists
Choose Substack if…
No clear advantage in the published data.
AI visibility side by side
Latest weekly run · Nov 2
| Metric | EmailOctopus | Substack |
|---|---|---|
| Visibility score | 3.1% | 0% |
| Change vs last week | New | New |
| Rank in Email Marketing | #24 | #55 |
| Share of voice | 1.1% | 0% |
| Mentions this run | 5 | 0 |
| Positive in AI answers | 80% | — |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
EmailOctopus 0pp · Substack 0pp over 0 weekly runs.
Engine by engine
EmailOctopus leads on 2 of 3 engines
Head to head in AI answers
0 engine answers name both brands
Features, pricing & fit
| Dimension | EmailOctopus | Substack |
|---|---|---|
| Pricing model | Flat tiers | — |
| Entry price | Free; paid from $9 / mo | — |
| Free plan | Yes | — |
| Deployment | Cloud SaaS hosted in the EU on AWS infrastructure | — |
| Integrations | 1000+ | — |
| Compliance | Says it is fully GDPR compliant, Registered with the UK ICO | — |
| Support | Live chat with a stated average response time of 9 seconds, Email support, Priority chat and email support on the Pro plan | Help center, Resource center, Community and programs |
| Founded | 2015 | 2017 |
| Headquarters | London, England, United Kingdom | — |
| Employees | 11–50 | — |
| Funding | Bootstrapped | Series C · $200M raised |
| Best for | Authors, bloggers, artists, charities, small online stores and other small senders who want simple email newsletters at a low price. | Writers, journalists, podcasters, video creators and media companies that want to sell subscriptions directly to readers |
Plans side by side
Substack
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
EmailOctopus
- Budget-friendly pricing
- Handles large subscriber lists
Substack
Profile in progress.
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “EmailOctopus vs Substack”, https://slateindex.ai/compare/emailoctopus-vs-substack, data of Nov 2, 2026. Licence: CC BY 4.0.