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KeilaEasy and reliable open source email newsletters
vs
SubstackThe app for independent voices
Comparison · Email Marketing · weekly run Nov 2

Keila vs Substack

Which one do AI engines recommend, and how do they differ on price, fit and features?

Track both brands

The short answer

Keila is the stronger AI pick in Email Marketing: it has a visibility score of 0 versus 0 for Substack.

Choose Keila if…

No clear advantage in the published data.

Choose Substack if…

No clear advantage in the published data.

AI visibility side by side

Latest weekly run · Nov 2

Metric Keila Substack
Visibility score0%0%
Change vs last weekNewNew
Rank in Email Marketing#50#55
Share of voice0%0%
Mentions this run00
Positive in AI answers——

The stronger value in each row is marked with a ✓.

Visibility score trend

Weekly runs over the last 60 days

0%25%50%75%100%Nov 2Keila 0%

Keila 0pp · Substack 0pp over 0 weekly runs.

Engine by engine

Keila leads on 0 of 3 engines

ChatGPT
0%
0%
AI Mode
0%
0%
Perplexity
0%
0%
KeilaSubstack

Head to head in AI answers

0 engine answers name both brands

0Keila ranked higher
0Substack ranked higher

Features, pricing & fit

DimensionKeilaSubstack
DeploymentSelf-hosted with an official Docker image, or managed through Keila Cloud—
SupportDirect support for Keila Cloud customers with templates, forms and spam complaints, Paid help setting up a self-hosted instanceHelp center, Resource center, Community and programs
Founded—2017
HeadquartersSeybothenreuth, Germany—
FundingBootstrappedSeries C · $200M raised
Best forOrganisations that want an open-source, EU-hosted alternative to Mailchimp, whether self-hosted or managedWriters, journalists, podcasters, video creators and media companies that want to sell subscriptions directly to readers

Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run

Cite as: SlateIndex, “Keila vs Substack”, https://slateindex.ai/compare/keila-vs-substack, data of Nov 2, 2026. Licence: CC BY 4.0.