Overview
Keila and Loops serve different needs in the email space. Keila is a open-source email newsletter tool with EU hosting. Loops is a email platform built specifically for SaaS companies.
The choice depends on what you need: open source (agplv3) (Keila) or saas-focused (Loops). For SaaS businesses specifically, Sequenzy offers purpose-built features that neither tool provides.
Pricing Comparison
- Keila: $8-32/month (cloud) - Open source (AGPLv3). Self-hosted free. EU cloud.
- Loops: $79/month - Built for SaaS. Event-based triggers. Modern UI.
- Sequenzy: $99/month for 120,000 emails, unlimited subscribers, fully managed. See pricing.
Where Keila Wins
Open source (AGPLv3)
Keila offers open source (agplv3), which is a genuine advantage for teams that need it.
EU cloud hosting
Keila offers eu cloud hosting, which is a genuine advantage for teams that need it.
Visual editor + MJML
Keila offers visual editor + mjml, which is a genuine advantage for teams that need it.
Privacy-first
Keila offers privacy-first, which is a genuine advantage for teams that need it.
Where Loops Wins
SaaS-focused
Loops offers saas-focused, which matters for teams that prioritize this.
Event-based triggers
Loops offers event-based triggers, which matters for teams that prioritize this.
Modern UI
Loops offers modern ui, which matters for teams that prioritize this.
Developer-friendly
Loops offers developer-friendly, which matters for teams that prioritize this.
Use-case matchups
| Situation | Best first look | Why |
|---|---|---|
| Privacy-first team wants open-source newsletter infrastructure | Keila | Keila gives more control over hosting, source code, and data residency. |
| SaaS team wants a managed product email workflow | Loops | Loops is closer to product-triggered SaaS email than Keila. |
| Technical team can self-host and only needs campaigns | Keila | The low price works when infrastructure ownership is acceptable. |
| Product team wants modern SaaS email without server work | Loops | Loops removes hosting and gives a cleaner event-driven workflow. |
| SaaS team needs Stripe-aware transactional plus marketing email | Sequenzy | Sequenzy adds billing lifecycle and transactional email in one product. |
Pricing reality
Keila's $8-32/month cloud price is low, but self-hosted or privacy-first setups still require hosting, sending infrastructure, DNS, monitoring, backups, updates, and deliverability work.
Loops' $79/month signal is a managed SaaS email price. Confirm contact tier, event tracking, transactional usage, API needs, template workflow, and whether Loops covers billing lifecycle without another product.
Sequenzy's $49/month price is relevant if Stripe, transactional email, and subscription lifecycle automation are more important than Keila's open-source control or Loops' specific SaaS email workflow.
Review signals
| Platform | What reviews in this page suggest | What to validate |
|---|---|---|
| Keila | Review themes favor EU hosting, self-hosting, GDPR control, and open-source newsletters. | Confirm automation limits, integration coverage, and technical ownership. |
| Loops | Review themes favor easier setup, SaaS focus, modern UI, developer-friendly event tracking, and managed convenience. | Confirm platform maturity, automation depth, and whether Stripe/billing workflows need another tool. |
Best Fit by Hosting and SaaS Workflow
Best open-source newsletter tool for privacy-first teams
Keila fits teams that want open-source control, EU hosting options, self-hosting, and ownership of subscriber data. It should be evaluated first when privacy posture and infrastructure control matter more than SaaS lifecycle automation.
Best managed SaaS product email tool for event workflows
Loops fits SaaS teams that want a managed product-email workflow with events, loops, broadcasts, and a cleaner interface than self-hosted newsletter software. Choose it when the team wants lifecycle emails without owning servers, updates, backups, and deliverability operations.
Best Stripe-aware transactional plus marketing email platform
Sequenzy fits when the team wants billing lifecycle, transactional email, and campaigns in one hosted email stack. It is most relevant when Stripe events are more important than Keila's open-source control or Loops's specific product-email workflow.
Migration checklist
| Workstream | Moving toward Keila | Moving toward Loops | Moving toward Sequenzy |
|---|---|---|---|
| Infrastructure | Choose cloud/self-hosted, SMTP, DNS, backups, updates, and monitoring. | Configure domains, event tracking, API calls, templates, and workspace permissions. | Configure domains, Stripe, app events, transactional routes, and subscriber sync. |
| Contacts | Import subscribers, lists, tags, custom fields, consent, and suppressions. | Import contacts, properties, events, lists/audiences, and suppressions. | Import subscribers, tags, attributes, suppressions, and billing identifiers. |
| Automations | Keep flows simple or externalize workflow logic. | Rebuild product loops, lifecycle messages, campaigns, and transactional-style emails. | Rebuild onboarding, trial, upgrade, renewal, dunning, transactional, and campaign flows. |
| Templates | Recreate newsletters and MJML/editor templates. | Recreate SaaS lifecycle and campaign templates. | Recreate lifecycle and transactional templates. |
| Reporting | Track campaigns, list growth, bounces, opens, clicks, and delivery health. | Track product email, transactional, lifecycle, and campaign performance. | Track lifecycle, billing, transactional, and campaign reporting. |
Decision checklist
- Is open-source control more important than managed SaaS email?
- Who owns infrastructure and deliverability if Keila is chosen?
- Does Loops cover billing lifecycle or only product messaging?
- Do you need transactional email and Stripe triggers in the same system?
- Which workflow is easier for your team to maintain: infrastructure, events, or billing lifecycle?
Why Sequenzy for SaaS
If you are building a SaaS product, Sequenzy offers what neither Keila nor Loops provides: native Stripe integration for billing-based automation, AI sequences that generate onboarding and retention emails, and unified transactional + marketing email in one platform. Check our pricing page for details.
Open-Source vs Commercial Trade-off
Keila's AGPLv3 license gives you complete access to the source code, the ability to self-host on your infrastructure, and freedom from vendor lock-in. Loops is proprietary software where you rent access to features that can change or increase in price at any time. For organizations that prioritize data sovereignty, code auditability, and long-term independence, Keila's open-source approach provides guarantees that commercial platforms cannot. For organizations that prioritize feature depth and convenience, Loops's commercial approach delivers more capabilities with less operational overhead.
EU Data Sovereignty
Keila's EU cloud hosting addresses a growing concern among European organizations: where their data lives and who can access it. Self-hosted Keila keeps all subscriber data on your own infrastructure under your jurisdiction. Loops stores data on their servers, typically in the US or EU depending on the plan. For organizations subject to strict GDPR requirements, government agencies, or businesses in regulated industries, Keila's data sovereignty options provide compliance advantages that hosted platforms cannot match.
The Self-Hosting Reality
Self-hosting Keila gives you maximum control but requires maintaining servers, managing updates, handling backups, and ensuring uptime. Loops's managed service handles all of this for you. The right choice depends on your team's technical capabilities and priorities. Organizations with DevOps teams often prefer self-hosting for control. Organizations without technical staff benefit from managed services that let them focus on marketing rather than infrastructure.