Broadcast vs Resend

This comparison is a little different from the others in this series, because Broadcast and Resend are not really competitors. They operate at different layers of the email stack, and in many cases the best answer is to use them together. That said, there is some overlap worth understanding, so this guide breaks down what each tool does, where they differ, and how they complement each other.

Platform Overview

Resend is a modern, developer-first email sending API. It focuses on the infrastructure layer – reliably delivering email from your application to inboxes. Its standout feature is React Email, which lets developers build email templates using React components. Resend handles domain management, DKIM authentication, delivery tracking, and provides a clean API for sending transactional and marketing emails.

Broadcast is an email marketing platform that manages the entire campaign lifecycle: subscriber management, audience segmentation, broadcast scheduling, automated sequences, opt-in forms, and analytics. Critically, Broadcast does not send emails itself. Instead, it connects to an ESP – and Resend is one of the supported providers. Broadcast handles the “who, what, when, and why” of email marketing; your ESP handles the “how” of delivery.

The Key Difference: Platform vs Infrastructure

Think of it this way:

• Resend is the postal service. It picks up your letter and delivers it to the right mailbox.
• Broadcast is the marketing department. It decides who gets which letter, when it should be sent, tracks who opened it, manages the mailing list, and handles unsubscribes.

Resend gives you an API endpoint to send a single email. Broadcast gives you a platform to manage campaigns, subscribers, and automations – and then uses an ESP like Resend to actually deliver those emails.

This means comparing them head-to-head on features is a bit like comparing a car engine to a car. One is a component; the other is the complete vehicle.

Feature Comparison

Where Resend Wins

React Email. If your team builds with React, Resend’s approach to email templates is genuinely innovative. You create email templates as React components with full TypeScript support, component reuse, and a familiar development workflow. This is a significant developer experience advantage for React-heavy teams.

Simpler for transactional-only use cases. If all you need is to send password resets, order confirmations, and notification emails from your application, Resend’s focused API is the most direct path. There’s no subscriber management or campaign layer to navigate – just an API call to send an email.

Built-in domain and DKIM management. Resend provides a clean interface for managing sending domains, DNS records, and DKIM authentication. You can verify domains and monitor authentication status directly in the Resend dashboard.

Delivery infrastructure. Resend invests heavily in deliverability at the infrastructure level – IP warming, reputation management, feedback loops, and bounce handling. This is their core business.

Where Broadcast Wins

Subscriber management. Broadcast provides a complete subscriber management system: imports, custom data fields, tagging, search, subscription status tracking, and sequential subscriber IDs. Resend’s contacts API is minimal by comparison.

Campaign scheduling and management. Create broadcasts, schedule them for specific dates and times, preview content, send tests, and track performance – all through a purpose-built interface. Resend has no concept of campaigns or scheduled sends.

Sequences with conditional logic. Build multi-step automated email sequences with delays, conditions, and branching logic. Welcome series, onboarding flows, drip campaigns, and re-engagement sequences are all supported. Resend does not offer automation.

Audience segmentation. Create dynamic segments based on tags, subscriber data, engagement metrics, and custom fields. Send targeted broadcasts to specific segments. Resend has no segmentation capability.

Opt-in forms. Create and embed subscription forms on your website that feed directly into your subscriber list. Apply tags, trigger sequence enrollments, and customize confirmation settings. Resend does not offer forms.

Autopilot AI newsletters. Generate newsletter content with AI assistance, saving significant time for regular newsletter senders.

Multi-ESP support. Connect multiple email servers from different providers. Use Resend for one channel and Amazon SES for another. Switch providers without losing your campaign history, subscribers, or sequences.

Open source and self-hosted. Run Broadcast on your own infrastructure with full access to the source code. Resend is a closed-source SaaS product.

Who Should Choose What

Choose Resend alone if your needs are purely transactional. If you’re a developer who needs to send password resets, order confirmations, and system notifications from your application, and you have no need for subscriber lists, campaigns, or automations, Resend’s focused API is the right tool.

Choose Broadcast alone if you need email marketing capabilities – campaigns, subscriber management, sequences, segments – and plan to connect any supported ESP (including but not limited to Resend).

Choose both together if you want Resend’s modern sending infrastructure paired with Broadcast’s campaign management platform. This is actually the ideal setup for many teams: Resend handles delivery with excellent developer ergonomics, while Broadcast handles everything else.

Using Resend as Your Email Server in Broadcast

Since Resend is one of Broadcast’s supported email service providers, connecting them is straightforward. Here’s how to set it up:

Step 1: Get your Resend API key

Log into your Resend dashboard and navigate to API Keys. Create a new API key with sending permissions. Copy the key – you’ll need it in the next step.

Step 2: Verify your sending domain in Resend

If you haven’t already, add and verify your sending domain in Resend. This involves adding DNS records (SPF, DKIM, and optionally DMARC) to your domain’s DNS configuration. Resend’s dashboard walks you through the specific records needed.

Step 3: Add Resend as an email server in Broadcast

In your Broadcast dashboard:

1. Navigate to Email Servers and click New Email Server
2. Select Resend as the provider
3. Enter your Resend API key
4. Configure your From name, From email address, and Reply-To address
5. Save the email server

Step 4: Configure webhooks (recommended)

To get delivery tracking, open tracking, click tracking, bounce handling, and complaint processing, set up Resend webhooks to point to your Broadcast webhook URL. This enables Broadcast to track the full lifecycle of every email sent through Resend.

In your Resend dashboard:

1. Go to Webhooks
2. Add a new webhook pointing to your Broadcast webhook endpoint
3. Select the events you want to track (delivered, opened, clicked, bounced, complained)

Step 5: Send a test email

Back in Broadcast, create a new broadcast or use the test email feature on your email server to verify that everything is connected. Check that the email arrives, and that webhook events flow back into Broadcast for tracking.

Once connected, Broadcast handles your subscriber lists, campaigns, sequences, and analytics – while Resend handles the actual email delivery. You get the best of both platforms working together.

A Note on Transactional Email

Both platforms support transactional email, but in different ways. Resend’s transactional API is designed for direct application-to-inbox sending with developer-friendly SDKs. Broadcast’s transactional email feature is accessed through its REST API and is useful when you want transactional sends tracked alongside your marketing emails within the same platform.

If you’re using both together, you can choose to send transactional emails directly through Resend’s API (for simplicity) or through Broadcast’s transactional API (for unified tracking). Either approach works.