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Resend

2 min read

Resend

A transactional email API built for developers. Where legacy email providers bury you in dashboards, Resend is a clean REST API plus typed SDKs: you send mail in a few lines, author templates as React components via React Email, and get deliverability tooling (domains, DKIM/SPF, webhooks) without the enterprise bloat. It was founded by people from the React/Next.js ecosystem, and it shows in the developer experience.

Description

  • Simple send API — one POST (or resend.emails.send(...)) with from/to/subject/html.
  • React Email — compose emails as React components with a local preview server; no more hand-written table HTML.
  • Domains & deliverability — guided DKIM/SPF/DMARC setup, dedicated/shared IPs, bounce & complaint handling.
  • Webhooks — delivery, open, click, bounce events for syncing state.
  • Batch & scheduling — send many at once or schedule for later.
  • Audiences/Broadcasts — lightweight marketing/newsletter sending alongside transactional.

Download or use

  • Platform: resend.com
  • Install: npm i resend then new Resend(process.env.RESEND_API_KEY)
  • React Email: npm i react-email @react-email/components
  • Docs: resend.com/docs

Reasoning for

Resend is my transactional email layer for Next.js apps. In AGRE it sends magic-link auth emails (paired with NextAuth/Auth.js) and lead/enquiry notifications; in Travelcast AI it handles user-facing notifications. The win is twofold: the SDK drops straight into a Next.js route handler with zero ceremony, and React Email lets templates live in the same codebase, typed and previewable, instead of in a vendor’s WYSIWYG editor. For a solo/small team that means email becomes versioned code reviewed in the same PR as the feature that triggers it.

Alternatives considered

  • Sendgrid — the incumbent I’ve used before; far more features and deeper analytics, but heavier API and dashboard-centric. Resend trades breadth for DX.
  • Mailgun — solid transactional API used on other engagements (e.g. Tech To The Rescue); comparable deliverability, less polished templating story.
  • Postmark — excellent transactional deliverability and speed; Resend’s React Email templating and modern SDK edged it out for new builds.
  • AWS SES — cheapest at scale but raw: you build the templating, retries, and webhooks yourself.

Resources

Template: tool

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