Who Keila is for#
Independent publishers owning subscriber data
Use Keila when a newsletter needs campaigns and forms without handing the whole list to a hosted marketing suite.
Skip if:
You need advanced marketing automation, ad audiences, and CRM features from a large hosted suite.
Organizations with privacy-sensitive lists
Use Keila when subscriber data location and infrastructure control matter more than a large template marketplace.
Skip if:
Your team does not want to maintain SMTP credentials, domain authentication, or server updates.
The problem it solves#
Newsletter pricing often punishes list growth even when a publication sends infrequently. A creator can build an audience, then face rising monthly costs just to keep the same subscriber list.
Subscriber data is also sensitive. Teams that publish to customers, members, or privacy-conscious readers may not want the list, campaign history, and tracking data locked inside a hosted marketing account.
How it solves it#
Newsletter campaign sending
Creates and sends email campaigns from a self-hosted app, with delivery handled through your inbox, SMTP, or providers such as AWS SES and Postmark.
Signup forms and contact lists
Manages subscribers and signup forms so publishers can own list growth without routing every contact through a proprietary marketing account.
Provider-flexible email delivery
Supports multiple delivery paths, including SMTP, AWS SES, Sendgrid, Mailgun, and Postmark, which lets teams choose cost and deliverability tradeoffs.
Strengths and trade-offs#
Strengths
- List ownership without per-subscriber billingKeila keeps subscriber data in your infrastructure and does not charge by list size when self-hosted. Delivery costs move to your chosen email provider.
- Practical for small publishersThe project supports using a regular inbox for smaller newsletters and paid delivery providers for larger lists, so teams can start without enterprise email tooling.
Trade-offs
- -Deliverability remains your responsibilityKeila manages campaigns, but reputation, DNS records, bounces, provider limits, and compliance setup still depend on the SMTP or delivery service you choose.
What it's built on#
- Languages
- ElixirJavaScript
FAQ#
What is Keila used for?
Keila is used to send newsletter campaigns, create signup forms, and manage subscriber lists from a self-hosted app.
What email providers does Keila support?
Keila can send through SMTP and providers such as AWS SES, Sendgrid, Mailgun, and Postmark. Smaller newsletters can also use their own email inbox.
Is Keila a Mailchimp alternative?
Yes. Keila can replace Mailchimp for teams that want self-hosted newsletter campaigns and subscriber ownership, though Mailchimp has more built-in marketing automation.
Similar open-source tools#
Mautic
Self-hosted marketing automation with email and campaigns
Syncthing
Decentralized continuous file sync with no central server
Galae Email
Self-hosted email server stack forked from Mailcow
Postiz
Schedule content on 20+ social networks with AI writing support
Rocket.Chat
Self-hosted team chat with voice, video, and omnichannel support
OpenCloud
File sync for organizations with data sovereignty and S3 storage