@workermailer/resend

Resend docs

Overview

What the Resend package does and how it aligns with the SMTP package shape.

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v0.1.0 Release notes

Resend overview

@workermailer/resend is the Worker Mailer package for teams that want the Resend API instead of raw SMTP, while keeping a familiar message model shared with @workermailer/smtp.

Why use the Resend package

This package keeps delivery simple for Worker apps that already use Resend for domains, sender identities, and analytics. It speaks HTTP with fetch, which makes it a lighter fit than direct SMTP when you do not need socket-level control.

What ships today

  • Cloudflare Worker-friendly delivery with fetch
  • TypeScript message types aligned with the SMTP package
  • Plain text and HTML bodies
  • Attachments passed through to Resend
  • Queue helpers for Cloudflare Queues
  • EmDash sandbox bundle in emdash-plugin/

SMTP alignment

The main API shape mirrors the SMTP package on purpose:

  • connect() returns a mailer object
  • send() exists as both an instance method and a static helper
  • queue helpers use the same producer and consumer pattern

That makes it easier to switch or support more than one delivery provider across the same Worker codebase.

When to choose Resend

Choose @workermailer/resend when you:

  • already use Resend as your email provider
  • want a fetch-based delivery flow without direct SMTP handling
  • prefer provider-managed infrastructure over raw socket transport

Where to go next