Loops
Developer-first email platform built for SaaS. Simple API, transactional email, marketing campaigns, and subscriber management.
Best for developer-led SaaS products that want a clean API for transactional and lifecycle email.
Use Cases
Free Tier
1,000 contacts, 4,000 email sends/month, transactional + marketing, API & SMTP
How to Maximize the Free Tier
Loops’ free tier gives you 1,000 contacts and 4,000 sends per month — generous for early-stage SaaS. The key advantage is that sends aren’t capped per contact, so you can send multiple transactional and marketing emails to the same user without burning through your quota. Use the React SDK for inline email components and the visual campaign builder for lifecycle sequences. Keep your contact list clean: remove inactive subscribers regularly since the 1,000 contact cap is the real constraint, not send volume.
Getting Started
Sign up at loops.so → create a workspace → set up a mailing list or transactional endpoint → grab your API key from Settings → install the Loops SDK or use the REST API → send your first email → build subscriber lists via the API or CSV import.
Pros
- Developer UX: Clean, modern API with excellent SDKs for React, Node, and Python — feels like it was built by devs for devs
- Combined plan: Transactional and marketing email share the same send limit — no need to manage separate services
- Subscriber-based pricing: Pricing scales with contacts, not sends — send more emails per contact without extra cost
Cons
- Contact cap: 1,000 contacts on the free tier — grows fast if you add users to subscriber lists
- Limited templates: Fewer pre-built email templates compared to mature platforms like Brevo or SendGrid
- Newer platform: Smaller community and fewer third-party integrations than established competitors