Open-source alternative
for Loops
Same modern features, but open-source and self-hostable. No contact limits, no proprietary lock-in, no hidden costs. Built for transparency.
Transparent Pricing vs Vendor Lock-In
Pay per email, not per contact
Pay per email sent
Pay-as-you-go pricing with unlimited contacts. No monthly commitments or contact-based limits.
Subscription tiers by contacts
Monthly subscription based on contact count with tier-based limits and feature restrictions.
Why Choose Plunk Over Loops
Open-source transparency meets modern SaaS features
Open Source & Transparent
AGPL-3.0 licensed. Inspect the code, contribute features, understand exactly how your emails are sent. No black boxes.
Self-Hostable
Run on your infrastructure with Docker. Full data control, compliance-ready, cost-optimized for scale. Loops is cloud-only.
Unlimited Contacts
No contact-based limits. Grow your audience without worrying about tier upgrades or surprise charges. Pay for emails, not contacts.
Predictable Pricing
Pay-as-you-go per email. No surprise costs as you grow. No forced tier upgrades. No sales calls. Just simple, transparent pricing.
Full API Access
Complete API access on all plans. No feature restrictions, no "contact sales" for API access. Everything documented and ready to use.
All Features Included
Transactional emails, campaigns, workflows, segmentation. All included. No artificial feature gating based on your plan.
Feature-by-Feature Comparison
See exactly what you get with each platform
Frequently asked questions
What is the main difference between Plunk and Loops?
Plunk is open-source (AGPL-3.0) and self-hostable, while Loops is a proprietary SaaS platform. Plunk uses pay-as-you-go pricing with no contact limits, whereas Loops uses subscription tiers with contact-based limits. Both offer similar features, but Plunk gives you full transparency and control.
Is Plunk cheaper than Loops?
It depends on your usage. Plunk's pay-as-you-go model ($0.001 per email) means you only pay for what you send. Loops charges monthly subscriptions based on contact count. For businesses with variable email volume or growing contact lists, Plunk is often more cost-effective.
Can I self-host Plunk unlike Loops?
Yes. Plunk is open-source and can be self-hosted using Docker. This gives you full control over your data, infrastructure, and costs. Loops is cloud-only with no self-hosting option.
Does Plunk have the same modern features as Loops?
Yes. Plunk offers transactional emails, marketing campaigns, workflow automation, dynamic segmentation, and a modern API, just like Loops. The key difference is Plunk is open-source, self-hostable, and has no contact limits.
How easy is it to migrate from Loops to Plunk?
Migration is straightforward. Export your contacts from Loops, import them to Plunk via CSV, and update your application to use Plunk's API. Most migrations can be completed in a few hours.
Switch to open source
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