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Full detail: Where this data comes from
Loops is a modern email platform purpose-built for software companies, combining product, marketing, and transactional email behind a single REST API and a single audience. Contacts, contact properties, mailing lists, events, segments, campaigns, email messages, themes, components, uploads, transactional sends, and dedicated sending IPs are all first-class API resources, with an OpenAPI 3.1 spec published at app.loops.so/openapi.yaml. Lifecycle workflows ("loops") use the Events API as their trigger, an HMAC-SHA256-signed webhook stream broadcasts every contact and email event for real-time integrations, and official SDKs ship for JavaScript, Nuxt, PHP, Ruby, and Go alongside an official Go-based CLI. Transactional email is included on every plan, team seats are unlimited, and a generous free tier covers 1,000 contacts and 4,000 sends per month — making Loops a Tier-1 developer-first email service for SaaS teams from waitlist to IPO.
APIs.json: https://raw.githubusercontent.com/api-evangelist/loops-so/refs/heads/main/apis.yml
- Position: Consuming
- Access: 3rd-Party
- Marketing Email
- Transactional Email
- Email Automation
- Email Campaigns
- Email Workflows
- Contacts
- Audience Management
- Events
- Webhooks
- SaaS
- Developer Tools
- Created: 2026-05-25T00:00:00.000Z
- Modified: 2026-05-25
The Loops API is a single REST API exposing every Loops resource — contacts, contact properties, mailing lists, events, campaigns, email messages, themes, components, transactional sends, uploads, suppressions, and dedicated sending IPs. Base URL is https://app.loops.so/api/v1. Bearer-token authentication with API keys generated in Settings → API. Defaults to 10 requests/second per team with x-ratelimit-limit and x-ratelimit-remaining response headers; returns HTTP 429 when exceeded. OpenAPI 3.1 spec published at app.loops.so/openapi.yaml.
- Human URL: https://loops.so/docs/api-reference/intro
- Marketing
- Transactional
- Contacts
- Campaigns
- Events
- SaaS
- Documentation
- OpenAPI — OpenAPI Specification
- OpenAPI — OpenAPI Specification
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Portal
- Documentation
- Documentation
- OpenAPI — OpenAPI Specification
- OpenAPI — OpenAPI Specification
- Getting Started
- Webhooks
- Integrations
- Pricing
- Blog
- Changelog
- Terms of Service
- Privacy Policy
- Security
- Sign Up
- Sign In
- GitHub Organization
- SDK
- SDK
- SDK
- SDK
- SDK
- Tool
- Tool
- Tool
- Code Examples
- Package
- Plans
- Authentication
- Rate Limits
- Webhooks
- Integrations
- Features
FN: Kin Lane Email: info@apievangelist.com URL: https://apievangelist.com