How to get started with Resend in 2026 is simpler than you might think: verify a domain, create an API key, and send your first email within minutes. Resend’s free tier includes 3,000 emails per month with no credit card required, making it a practical starting point for indie hackers. StacksFree Verdict: 8/10 — generous limits, modern DX, but daily caps require planning.
How This Guide Was Built
This review is based on official documentation, pricing pages, and community reports — we did not run the tool hands-on. We verified the free tier limits, the signup flow, and the first-project steps against Resend’s official pricing page and Resend’s official documentation. We did not test the paid tier or run the tool hands-on — steps are based on official docs. Last verified: August 2026.
What Is Resend, and What Does It Replace?
Resend is an email API for developers that replaces the need to manage your own SMTP servers or wrestle with legacy providers like SendGrid. It provides a modern REST API, official SDKs, and built-in deliverability features such as DKIM, SPF, and DMARC authentication, all documented on Resend’s official documentation. Instead of configuring mail servers, you call an API.
How Do I Get Started with Resend?
Getting started with Resend requires four steps: sign up, verify your domain with DNS records, create an API key, and install the SDK to send your first email, per Resend’s official documentation. Begin by creating a free account at resend.com/pricing — no credit card is required. Then follow the domain verification guide to add DNS records, create an API key, and install the SDK for your stack.
What’s Included in the Resend Free Tier in 2026?
The Resend free tier includes 3,000 emails per month, capped at 100 emails per day, with 30-day data retention and 1 custom domain, per Resend’s official pricing page. You also get 10,000 automation runs, 5 AI credits per month, sending and receiving, ticket support, and 1 webhook endpoint. All plans include DKIM/SPF/DMARC authentication, open and link tracking, REST API, SMTP relay, official SDKs, scheduled and batch sending, and React Email support.
What Are the Resend Free Tier Limits?
The Resend free tier limits include a 100-email-per-day cap, 30-day data retention, 1 custom domain, and 1 webhook endpoint, per Resend’s official pricing page. The 3,000 monthly allowance sounds generous, but the daily cap can stall a launch day or a viral moment. When you need more, the Pro plan at $20 per month provides 50,000 emails monthly with no daily limit, 10 domains, and 100 AI credits.
How Do I Send My First Email with Resend?
You send your first email with Resend by installing the official npm package, creating a Resend instance with your API key, and calling the emails.send method, per Resend’s Node.js quickstart. Here is a copy-paste example:
import { Resend } from 'resend';
const resend = new Resend('re_YourApiKeyHere');
await resend.emails.send({
from: '[email protected]',
to: ['[email protected]'],
subject: 'Hello from Resend',
html: '<p>Your first email!</p>'
});Security warning: Never expose your API key in client-side code. Store it in environment variables on your server.
You do not need a verified domain to test. Resend provides a resend.dev test domain that sends real emails only to addresses you verify in the dashboard, per Resend’s official documentation. That means you can go from zero to a working email in under ten minutes, then add your own domain once the flow works. When you do add a domain, Resend generates the DKIM, SPF, and DMARC records for you, and you paste them into your DNS provider — the whole verification step is guided in the dashboard (Resend docs: add a domain).
Resend vs. SendGrid vs. Postmark vs. Mailgun
Resend’s closest competitors are SendGrid, Postmark, and Mailgun. The differences matter most for the free tier:
| Provider | Free tier | Best for |
|---|---|---|
| Resend | 3,000 emails/mo, 100/day | Developer DX, React Email |
| SendGrid | 100/day, unlimited monthly | Marketing tools, template editor |
| Postmark | None (paid from ~$15/mo) | Maximum deliverability |
| Mailgun | None (flex plan ~$15/mo) | Inbound email parsing |
SendGrid’s free tier has the same daily cap but no monthly ceiling, which suits very low-volume apps that never spike. Postmark and Mailgun have no permanent free tier, so Resend wins outright if your budget is $0. Resend’s edge is developer experience: official SDKs, a clean REST API, and first-class React Email support that lets you author templates as React components (Resend docs).
Best Use Cases for the Free Tier
The 3,000-per-month allowance fits transactional email workloads better than marketing:
- Account emails — verification codes, password resets, magic links. Most early-stage apps send well under 100 of these per day.
- Developer notifications — CI/CD alerts, deployment failures, error reports. Low volume, high urgency.
- Contact forms — route form submissions from a static site into your inbox (pair with our Tally guide for the form side).
- Side projects and hackathons — enough volume to validate an idea without spending a cent.
What does not fit: newsletter broadcasts, drip campaigns, and anything that exceeds 100 sends in a single day. A launch-day spike of 500 sign-ups will hit the cap and queue or drop messages, so plan a temporary upgrade if you expect a burst.
Deliverability Checklist
The free tier includes DKIM, SPF, and DMARC authentication on all plans, but you still control the DNS side. Three things trip up beginners:
- Flatten SPF records. SPF has a 10 DNS lookup limit. If you already run Google Workspace or other mail services on the same domain, your SPF record can silently exceed the limit and cause failures. Use
-all(hard fail) rather than~allto prevent spoofing. - Wait for DNS propagation. Records usually propagate in 15–30 minutes but can take up to 72 hours. Resend shows verification status in the dashboard — don’t send from the domain until it flips to verified.
- Watch bounce rates. Resend surfaces bounces and complaints in the dashboard and via webhooks. High bounce rates damage sender reputation; clean stale addresses from your list before you send.
When to Upgrade
The Pro plan at $20 per month bumps you to 50,000 emails with no daily limit, 10 domains, and more webhook endpoints, per Resend’s official pricing page. Upgrade when you consistently approach 100 emails in a day, need multiple sending domains, or want inbound email handling. Until then, the free tier is a legitimate production option for small workloads.
Common Mistakes to Avoid
The most common Resend mistakes are hitting the 100-email daily cap, skipping domain verification, exposing API keys, and treating 3,000 monthly emails as unlimited. First, the daily cap resets each day, so batch your sends strategically around the 100-email ceiling. Second, always verify your domain and configure DKIM to protect deliverability — skipping this lands emails in spam. Third, keep API keys server-side only. Finally, remember 3,000 per month is a ceiling, not a target.
FAQ
Is Resend free for beginners?
Yes, Resend is free for beginners with a $0 per month plan that includes 3,000 emails monthly and 100 emails daily, per Resend’s official pricing page. No credit card is required to start. The free tier includes full API access, domain authentication, and tracking features, making it suitable for learning and small projects.
How many emails can I send on the Resend free plan?
You can send 3,000 emails per month on the Resend free plan, but only 100 per day, per Resend’s official pricing page. The monthly limit is not lifetime — it renews each month. If you need to send more than 100 emails in a single day, consider upgrading to the Pro plan.
Does Resend require a credit card?
No, Resend does not require a credit card to sign up for the free plan, per Resend’s official pricing page. You can create an account, verify a domain, and send emails at no cost. A credit card is only needed if you choose to upgrade to a paid plan like Pro or Scale.
Where to Go Next
You now know how to get started with Resend, what the free tier includes, and where its limits bite. For a deeper look at the free plan details, visit the Resend free tier directory entry. If you’re building a contact form, pair Resend with our Tally free tier guide to route submissions to your inbox. For transactional emails triggered by database events, see our Supabase free tier guide, and for deploying your app, check our Vercel free tier guide.