Loops vs Resend
A source-aware comparison of pricing, documented capabilities and workflow fit.
Short answer
- Price: not directly comparable — Loops is free tier available, Resend is free tier available.
- How to start: both are free tier available.
- Where they differ: only Resend has open source / self-hostable; both offer public api and sso (saml).
These lines are generated from the pricing we track, not from a paid placement. How we score tools.
What Loops is
Loops is email for software companies: transactional and marketing sends in one place with a modern API. Keeping product and marketing email in one place with a modern API suits software teams who do not want two systems and two reputations. It is young, so campaign tooling is thinner than the established marketing platforms.
What Resend is
Resend is a transactional email API aimed at developers, with a clean SDK and React-based email templates. It is built for the case where email is part of the product: sending is an API call, and templates are components rather than a drag-and-drop editor. That makes it a poor fit for marketing teams who need to compose campaigns without a developer.
Side by side
What Loops is built to do
- Unified sends
- Handles transactional and campaign email from one account.
- Developer API
- Triggers messages from application events through a typed API.
- Audience filters
- Segments contacts on product attributes for campaigns.
What Resend is built to do
- Developer-first API
- Sends mail through a small API with official SDKs for common runtimes.
- React email templates
- Builds message templates as components instead of HTML tables.
- Domain authentication
- Guides SPF, DKIM and DMARC setup for the sending domain.
Choose Loops if
- Software companies that want one tool for product and marketing email.
Choose Resend if
- Developers sending transactional email from an application.
Evidence and freshness
Where a claim on this page comes from a vendor page, it is linked here.
Loops: pros & cons
- Clean developer experience
- Transactional and campaign email together
- Simple, readable pricing
- Younger than established providers
- Fewer advanced segmentation features
- Smaller deliverability track record
Resend: pros & cons
- Simple API and good developer experience
- React Email templates keep markup maintainable
- Generous free tier
- Newer than established providers
- Fewer deliverability controls than enterprise tools
- Marketing email features are limited
Our verdict on Loops
Pleasant to work with. Very large senders should still test deliverability carefully.
Our verdict on Resend
A pleasure to integrate. For high-volume marketing sends, an established ESP still has the edge.