Resend vs Loops: Which Should You Choose?

Resend

The email API for developers — send transactional and marketing email that reaches inboxes, not spam folders.

Resend is an email platform built for developers who want sending email to feel like using a modern API product. You integrate with a few lines of code using official SDKs for Node.js, Python, Ruby, Go, PHP, and more, and build templates in React with the open-source React Email library that the same team maintains. Resend focuses heavily on deliverability — domain authentication with SPF, DKIM, and DMARC guidance, a clean sending infrastructure, and detailed logs, webhooks, and analytics for every message. Beyond transactional email like password resets and receipts, Resend also supports marketing broadcasts and audience management, so a product team can run both kinds of email from one place. A free tier of 3,000 emails per month makes it easy to start small and scale up.

Loops

One email platform for SaaS — marketing, product, and transactional email in a single, Notion-like editor.

Loops is a modern email platform built specifically for software companies, unifying the three kinds of email a SaaS product sends — marketing campaigns, lifecycle product email, and transactional messages — in one place. Instead of stitching together a marketing ESP and a transactional API, teams write every email in the same clean, Notion-style editor and keep one contact base with shared properties and events. Loops shines at lifecycle automation: trigger onboarding sequences from sign-up events, send behavior-based nudges, and re-engage dormant users, all driven by API events or integrations like Segment. Developers get a simple API and SDKs for transactional sends, while marketers get campaigns, audiences, and analytics without engineering tickets. A free tier covers early-stage products, making Loops a favorite among indie SaaS and startup teams.