Loops - The email platform built for SaaS

Loops - The email platform built for SaaS

Loops makes email marketing for modern SaaS companies easy. It's the best way to create, send and track beautiful email campaigns.

Created Aug 30, 2025
Updated May 31, 2026

What it is

Loops is an email platform designed specifically for modern software-as-a-service (SaaS) companies. It provides a unified interface for sending product, marketing, and transactional emails. The platform is built to serve the needs of designers, developers, and marketers within a software company, or for individual founders handling multiple roles.

Main Features

Email Creation and Design

  • Document-Style Editor: Craft emails using a simple, document-like writing interface.
  • Saved Themes: Create and apply reusable themes to maintain consistent branding across all emails.
  • Components: Build email components that can be updated in one place, with changes propagating everywhere they are used.
  • Dynamic Content: Personalize emails with relevant content out of the box.

Audience Management and Automation

  • Loop Builder: Automate email sequences (e.g., onboarding, re-engagement) with a visual builder.
  • Audience Segmentation: Create dynamic audience segments that improve over time by integrating multiple data sources.
  • Triggers and Filters: Start automations based on contact updates, events, or new contacts, and refine audiences with timers, branches, and filters.

Technical Integration

  • REST API: Manage contacts (create, update, delete), send events, and send emails via API endpoints.
  • SDKs: Official Node.js SDK with over 30,000 weekly downloads for simple integration.
  • OpenAPI Spec: API specifications available in JSON and YAML for quick integration.
  • Pre-built Integrations: Connect with platforms like Supabase, Clerk, Zapier, Census, Framer, Make, Segment, Webflow, and Bubble.

Deliverability

  • Intelligent Queueing: An automatic system that spaces out email sending to reduce spam risks and improve inbox placement.
  • Complete DNS Handling: Manages technical aspects of deliverability, including DMARC and DKIM configuration.
  • Bounce Doctor: A free, standalone tool for diagnosing and resolving email deliverability issues.

How it works

Automated Customer Onboarding

A marketer uses the Loop Builder to create an automated onboarding sequence. The loop is triggered when a new contact is added. It then sends a series of pre-written emails (e.g., Onboarding Day 1, Onboarding Day 2) to guide the user through the product.

Transactional Email Integration

A developer integrates the Loops API into their application's codebase. They use the Node.js SDK to send a POST request to the /contacts/create endpoint when a user signs up. This adds the user to Loops and can trigger a pre-built Account Confirmation transactional email.

Marketing Campaign Creation

A designer creates a branded newsletter template using saved themes and components. A marketer then uses this template to send a campaign to a dynamic segment, such as users identified as Likely to churn, which is automatically updated based on user engagement data.

Key Points

  • The platform is backed by Y Combinator.
  • It consolidates product, marketing, and transactional email into a single interface, aiming to remove email complexity from the codebase.
  • It emphasizes high deliverability rates, claiming email open rates of more than 50%.
  • The tool is designed to be usable and valuable for entire teams (design, engineering, marketing) as well as solo founders.

Additional Details

  • A free deliverability diagnostic tool, Bounce Doctor, is available.
  • Extensive documentation is provided and updated daily.
  • The company behind Loops is Astrodon Inc.
  • The privacy framework complies with the Data Privacy Framework (DPF).
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