Loops

Loops is a unified email platform that enables product teams to send product updates, marketing campaigns, and transactional messages from a single interface, covering the full lifecycle from waitlist to IPO. Founded as Astrodon Incorporated and backed by Y Combinator W22, the platform combines a visual email editor designed from first principles, a REST API and type-safe SDKs for Node.js, Next.js, Ruby, PHP, Nuxt, and Laravel, and lifecycle automation with contact properties, event triggers, audience segmentation, and A/B testing. The npm package records over 263,000 weekly downloads, reflecting strong developer adoption. AI agent integration enables automated email creation, content updates, and workflow orchestration through structured prompts and API calls. Native integrations include Supabase, Clerk, Zapier, Framer, Make, Segment, Webflow, Bubble, Stripe, PostHog, and Auth0 for seamless data pipelines and event-driven email triggers. The platform is trusted by Framer since December 2022, Linear since January 2023, Perplexity since March 2023, Clerk since November 2023, Reuters since February 2024, Granola since September 2024, Sketch since October 2025, Conductor since May 2026, and numerous other startups and enterprises. The design system ensures emails render correctly across all supported email clients, with reusable components, theme management, and style controls. The free tier includes 1,000 contacts and monthly email sending with pay-as-you-go scaling.