Keila vs Substack
Last updated November 2026
Looking for a European alternative to Substack? Here's how Keila compares, on EU hosting, GDPR and what it does.
Our pick for a European buyer: Keila. We weight data residency, GDPR and EU jurisdiction above everything else — that is the constraint this directory exists to solve.
What it is
Open-source newsletter platform with unlimited contacts
not established
Headquarters
🇩🇪 DE
No
EU data residency
Yes, for all customers
not established
DSGVO / GDPR
Yes
not established
Certifications
No
not established
Price from
€8/mo
not established
Free plan
No
not established
Open Source
Yes
not established
Ratings
No
No
Integrations
SMTP, Amazon SES, SendGrid, Mailgun, Postmark +1
not established
We have not yet completed our own research on Substack; rows above show only what we can evidence. Check the vendor for specifics.
Where each one wins
Keila
Substack
Review sentiment not yet compiled.
Data residency & compliance
Keila
Substack
EU data residency
Yes, for all customers
not established
Transfer mechanism
Not required — data stays in the EU
not established
Certifications
No
No
Pricing
Keila
- Keila XS €8 per month2,000 emails/month · Unlimited contacts and projects · Send with Keila or bring your own email server
- Keila S €16 per month5,000 emails/month · Unlimited contacts and projects · Send with Keila or bring your own email server
- Keila M €32 per month15,000 emails/month · Unlimited contacts and projects · Send with Keila or bring your own email server
- Keila L €64 per month50,000 emails/month · Unlimited contacts and projects · Send with Keila or bring your own email server
- Keila XL €128 per month100,000 emails/month · Unlimited contacts and projects · Send with Keila or bring your own email server
- Keila XXL €256 per month250,000 emails/month · Unlimited contacts and projects · Send with Keila or bring your own email server
Prices include tax. All plans include unlimited contacts and projects.
Substack
No published pricing we could verify.
Features
Keila
- Email creation and templates
- WYSIWYG, visual Markdown, and plain-text editors, Image uploads in WYSIWYG editor, MJML, HTML, and reusable templates, Content slots for modular design
- Personalization
- Shopify Liquid templating, Custom contact and campaign data as JSON, Preview emails to up to five recipients
- Contacts, forms, and segmentation
- Unlimited contacts and projects on Cloud plans, Embedded signup forms, Segmentation by attributes, language, tags, and interactions
- Campaigns and transactional email
- Send newsletters immediately or schedule, Automated welcome emails, Transactional emails via API (e.g., password resets, order confirmations)
- Analytics and privacy
- Open- and click-performance analytics, Option to disable tracking for individual campaigns
Substack
Feature breakdown not yet compiled.