Resend
by Resend Inc.
Developer-first transactional email API with React-based templates and audience management. Resend is a developer-first transactional email API from Resend Inc., a Y Combinator-backed San Francisco company founded in 2023.
Performance Scores
1 ranking evaluated
Score range: 8.0 – 8.0
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#10Best Email Automation Platforms 2026
Score: 8.0 · Best for: Modern React/TypeScript teams that want a transactional email API with React-native templates
Key Facts
company
| Attribute | Value | As of | Source |
|---|---|---|---|
| Founded | 2023 | May 2026 | Resend About page |
| Headquarters | San Francisco, California | May 2026 | Resend About page |
| Employees | 11-50 | May 2026 | Resend LinkedIn |
pricing
| Attribute | Value | As of | Source |
|---|---|---|---|
| Starter pricing | $20/month Pro (50,000 emails/month) | May 2026 | Resend pricing |
| Free tier | 3,000 emails/month, 100/day, single domain | May 2026 | Resend pricing |
features
| Attribute | Value | As of | Source |
|---|---|---|---|
| SDKs | Node.js, Python, Ruby, PHP, Go, .NET (community) | May 2026 | Resend SDK docs |
| Templates | React Email components rendered server-side | May 2026 | React Email project |
| Integrations | 20+ native integrations and SDKs | May 2026 | Resend integrations docs |
Strengths
- ●React-based email template authoring
- ●Generous free tier (3,000/month)
- ●Strong deliverability defaults (DKIM, SPF, DMARC guides)
- ●Tight integration with Vercel, Supabase, and React stack
Limitations
- ●Smaller historical track record than SendGrid or Postmark
- ●Newer to enterprise compliance certifications
- ●Limited marketing automation features compared to Klaviyo
Based on evaluations in 1 ranking: Best Email Automation Platforms 2026
About Resend
Resend is a developer-first transactional email API from Resend Inc., a Y Combinator-backed San Francisco company founded in 2023. The team also maintains React Email. SDKs for Node.js, Python, Ruby, PHP, Go. Free tier 3,000 emails/month, paid from $20/month.
Resend is a developer-first transactional email API built by Resend Inc., a San Francisco company founded in 2023 by Zeno Rocha and Bu Kinoshita, the team behind the open-source React Email project. Resend is positioned as a modern alternative to SendGrid, Mailgun, and Postmark, with first-class React Email template support, audience and broadcast features, and SDKs for Node.js, Python, Ruby, PHP, and Go.
Templates are written as React components using the React Email library, allowing developers to compose email layouts with the same component model used in their web applications. Resend renders the React tree to HTML and plain text on the server before delivery. The platform also provides webhook event streams for delivery, open, click, bounce, and complaint events, plus an audience and broadcast feature for marketing-style sends without requiring a separate marketing tool.
Resend pricing as of May 2026 starts with a free tier (3,000 emails/month, 100/day, single domain). Paid plans are Pro at $20/month (50,000 emails/month, multiple domains, 7-day retention), Pro 100k at $90/month (100,000 emails/month, 30-day retention), and Enterprise at quote-based pricing. Volume above included tiers is billed per email overage.
The product integrates natively with Next.js, Vercel, Supabase, Cloudflare Workers, AWS Lambda, Stripe, and most JavaScript and Python web frameworks. It is positioned for product engineering teams that want a transactional email API without the legacy weight of older providers.
Integrations (8)
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Email AutomationSee How It Ranks
Best Email Automation Tools in 2026
A ranked list of the best email automation tools in 2026. This ranking evaluates platforms across deliverability, automation depth, template quality, analytics capabilities, and pricing value. The ranking includes transactional email APIs (SendGrid), ecommerce-focused platforms (Klaviyo), creator-oriented tools (ConvertKit), multi-channel marketing suites (Brevo, Customer.io), and the most widely adopted email platform (Mailchimp). Tools with fallback entries use ActiveCampaign where a primary tool slug is unavailable.
Best Marketing Automation Platforms 2026
Our definitive ranking of the best marketing automation platforms for 2026, scored on automation depth, deliverability, pricing value, and integration breadth.
Questions About Resend
What does the Resend free tier include in 2026?
As of May 2026, the Resend free tier includes 3,000 emails/month, 100 emails/day, one verified domain, 30-day email log retention, and basic webhooks. The free tier is intended for development, testing, and very small production sends; teams typically upgrade to the $20/month Pro plan once they exceed 100 emails/day.
How do you migrate from SendGrid to Resend in 2026?
A SendGrid-to-Resend migration in 2026 follows five steps: verify domains in Resend, port templates (Resend recommends React Email), swap the API client in code, run dual-send for a verification window, and update DNS to point all sending traffic to Resend. Most production migrations take 1-2 weeks end to end.
What's the difference between Resend, SendGrid, and Postmark?
Resend is a React-template developer-first email API from 2023 with 3,000 free emails/month and $20/month for 50K. SendGrid is the high-scale market leader from 2009 (Twilio) with marketing plus transactional from $19.95/month. Postmark is the deliverability specialist from 2010 (ActiveCampaign) for transactional-only at $15/month for 10K.
Resend review 2026: features, pricing, and verdict
Resend earns 8.2/10 in our 2026 evaluation. The developer-first email API from Resend Inc. (San Francisco, founded 2023) supports React-based templates, SDKs for six languages, and a free tier of 3,000 emails/month. Pro at $20/month covers 50,000 emails. Y Combinator-backed.