Resend is an email delivery platform designed for developers and product teams. It combines transactional email infrastructure with marketing broadcasts, giving teams a unified way to send application-triggered messages and subscriber communications. Resend supports a REST API, native SDKs, SMTP, CLI commands, webhooks, and dashboard-based workflows.
Why Use Resend?
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Developer-first delivery: Integrate email into applications through APIs, SDKs, SMTP, and CLI tooling.
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Operational visibility: Inspect API activity, request details, response bodies, delivery events, opens, clicks, and bounces.
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Flexible sending: Send individual messages, batch emails, scheduled messages, attachments, and automated workflows.
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Scalable pricing: Start at no cost and move to paid plans based on transactional email volume or marketing contact counts.
Who is Resend For?
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Product developers: Build password resets, receipts, alerts, invitations, and other event-driven messages.
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Startups and small businesses: Launch with a free allowance and upgrade as sending volume grows.
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Medium-sized teams: Manage domains, API keys, contacts, audiences, campaigns, and delivery events from one platform.
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Enterprise organizations: Use higher-volume plans with options such as dedicated infrastructure, priority support, SSO, and service-level commitments.
Key Features and Benefits
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Email API: Send HTML, text, React-based email content, attachments, and messages to multiple recipients.
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SDKs and SMTP: Connect modern applications or existing mail workflows with implementation options suited to different stacks.
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Batch sending: Trigger high-volume email delivery through a single API request.
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Idempotency: Prevent duplicate processing when retries or repeated requests occur.
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Webhooks: Capture delivery and engagement events for monitoring or internal data systems.
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Broadcasts: Create marketing campaigns for subscriber audiences through dashboard and API workflows.
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Automations: Build recurring or event-driven email processes without implementing every workflow manually.
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Domain management: Verify and manage sending domains and programmatically handle domain operations.
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Free entry point: The free transactional plan includes up to 3,000 emails per month, with a daily sending limit.
Resend is particularly suitable for teams that want a focused, developer-oriented alternative to building email infrastructure internally. Its transparent entry-level pricing and broad integration surface make it cost-effective for early-stage products, while higher tiers support larger volumes and more advanced operational requirements. Teams with complex compliance, dedicated infrastructure, or guaranteed service needs should evaluate the enterprise offering and support commitments before adoption.
