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Subject Line Tester SPF Checker & Generator DMARC Record Generator DMARC Checker DKIM Checker & Generator Email Header Analyzer MX Lookup MTA-STS Checker & Generator BIMI Checker & Generator Email Deliverability Test Email Spam Checker Email Template BuilderBoth run on your own server, and both take data ownership seriously. Keila is a free, open-source newsletter platform built in Germany, with the most polished UI in open-source email. Broadcast is a paid platform ($250 one-time) that ships the automations Keila still has on its roadmap, with support included.
Straight answer: if open source is a requirement and a newsletter is the whole job, Keila is the best-designed open-source option and we’d point you to it without hesitation. Choose Broadcast when you need welcome sequences and triggered drips this quarter, not on a roadmap, and someone to email when a send goes sideways. We sell Broadcast, so discount our take accordingly. But we’d rather you pick the right tool than refund the wrong one, and this page is an honest look at where that line falls.
Where Broadcast and Keila each pull ahead
| Feature | Broadcast | Keila |
|---|---|---|
| Software cost | $250 one-time | Free (AGPLv3) |
| Managed cloud option | No, self-hosted only | Keila Cloud, €8–256/mo, EU-hosted |
| Subscribers (self-hosted) | Unlimited | Unlimited |
| Drip / welcome sequences | Built-in | One welcome email per form; sequences planned |
| Triggered / conditional automations | Yes | Planned |
| Segmentation | Tags, lists, custom fields | Visual editor, custom logic |
| Signup form builder | Yes | Yes, with double opt-in |
| Email editors | Rich text, HTML & blocks | Blocks, Markdown, MJML |
| Transactional email API | Yes | Yes |
| ESP choice | SES, Postmark, Mailgun, any SMTP | SES, SendGrid, Mailgun, Postmark, any SMTP |
| AI agent / MCP integration | API + MCP server | REST API only |
| Data ownership (self-hosted) | Your server | Your server |
| Support | Email and Discord, included | Community / GitHub |
| Runtime | Rails app + Postgres | Elixir app + Postgres (Docker) |
| Release speed | 141 since Dec 2025 | 12 since Dec 2025 |
| Updates | Every 2.x release included. One-click upgrade in the dashboard. | Pull a new Docker image |
| AI assistant | Ask AI, included (bring your own key) | No |
| Two-factor sign-in | Authenticator app, can be required for all users | Planned |
| Scheduled offsite backups | Built in: S3, R2, B2 or any S3-compatible storage | No, back up Postgres yourself |
| SPF / DKIM / DMARC monitoring | Built in, with alerts | No |
The “planned” rows deserve context. Keila has shipped over 50 releases, and marketing automations and A/B testing are on its public roadmap. They may well arrive. But a roadmap can’t send your welcome series this quarter, and that timing question is most of this comparison. Worth saying plainly, too: Keila’s editing experience is good. Between the block editor, Markdown, and MJML support, it’s the closest thing open source has to a modern SaaS composer.
Releases since December 2025
Last release: Broadcast today ยท Keila 6 days ago.
Keila’s software is free, and there’s a paid cloud if you’d rather not run a server. Broadcast is a one-time $250. Neither number is the whole story: the real difference is whose job it is to build what’s missing. Here’s the full bill for each.
Best value when a newsletter is the whole job and open source is a requirement, not a preference.
Best value when the automations you need would otherwise mean roadmap-watching or custom scripts you maintain.
The biggest gap, and it’s about timing. Keila added one welcome email per signup form in version 0.19 (February 2026), and lists multi-step automations and A/B testing as planned. Today, a series of emails on Keila means external scripts against its API, and that’s work you own. A typical onboarding sequence (four emails over two weeks, skipping anyone who already upgraded) is an afternoon of configuration in Broadcast. On Keila right now, it’s a small application you write, host, and debug yourself.
Keila wins this outright. AGPLv3 means you can read the code, patch it, and fork it if the maintainers ever stop. For ordinary self-hosting the AGPL costs you nothing; it only bites if you modify Keila and offer it as a service, which obliges you to publish your changes. Broadcast is commercial: no copyleft obligations, but not open source. If OSS is a hard requirement, this comparison ends here. Use Keila.
Self-hosted, both land in the same strong position: subscriber data on a server you control, in the jurisdiction you choose. That’s the setup we walk through in E-Mail-Marketing selbst hosten, and it avoids the US-transfer problems covered in our ActiveCampaign & DSGVO assessment. Keila adds one thing Broadcast doesn’t offer: a managed cloud, made in Germany and hosted in the EU, for teams that want the DSGVO story without operating a server. If your DPO wants an EU vendor and you don’t want a VPS, that’s a real point for Keila. If you’re willing to run a server on Hetzner or a German host, both tools give you the same residency; Broadcast gives you more product on top of it.
Every Broadcast license includes email support and updates, and the API plus MCP server lets AI agents manage campaigns for you. If you already automate parts of your business with agents, a platform they can operate changes day-to-day work. Keila has a capable REST API and a public GitHub, but self-hosted Keila is self-supported: when something breaks an hour before a send, you’re reading issues, not emailing a vendor who answers.
An honest take on when each tool makes sense
Keep the ownership Keila gets right. Add the sequences and support a full email program needs, today rather than on a roadmap.
Comparisons cover the tradeoffs. How To covers whether Broadcast does the specific thing you need, organized by what you are trying to accomplish rather than by feature name. If the answer is no, it says no.
One-time payment, unlimited emails forever
"I was tired of spending hundreds per month on Beehiiv to send emails. […] Then I found Broadcast and now I can scale at my own pace without burning money I worked hard for."
@bensnichedsitesRegular License Most popular
One server, for your own business
$150
$250
Agency License
Up to 5 servers, for client work
$450
Extended License
Up to 25 servers, for many clients
$1,000
Every license has every feature, unlimited subscribers and all 2.x updates.