Email APIs

Resend vs SendGrid in 2026: Which Should You Actually Use?

If you are comparing Resend and SendGrid you are asking one of two questions. Either you are starting a new project and need to pick a transactional email provider, or you are on SendGrid and evaluating whether to switch after they killed the free tier in May 2025.

The honest answer depends heavily on your situation. Resend wins on developer experience by a significant margin. SendGrid wins on price at high volume and on marketing email features. Neither is universally better.

This article gives you a direct comparison and a clear verdict for each situation.

Quick Verdict

New project, under 100K emails per month: Use Resend. Better developer experience, permanent free tier, faster setup.

Existing SendGrid customer at scale: Stay unless developer experience is causing real friction. Switching costs are real and SendGrid is cheaper above 100K per month.

Need marketing email and transactional in one platform: SendGrid. Resend's marketing features are a separate product and less mature.

Building with Next.js or FastAPI: Resend. React Email integration and clean Python SDK make it the obvious choice for modern stacks.

The Core Difference

Resend was built in 2023 by Zeno Rocha, the creator of React Email. Every design decision was made with developers in mind — clean REST API, typed SDK, React component templates, fast setup.

SendGrid was built in 2009 and acquired by Twilio in 2019. It has 15 years of deliverability infrastructure, ISP relationships, and enterprise features. It also has 15 years of accumulated complexity, legacy UI patterns, and API design decisions that made sense in 2012.

They are not competing for the same customer. Resend is for developers building modern apps who want email handled cleanly without complexity. SendGrid is for teams that need marketing campaigns, enterprise compliance, dedicated IP management, and high-volume infrastructure under one roof.

Developer Experience

This is where Resend wins and it is not close.

Resend setup: Add your domain, add two DNS records, install the SDK, call the API. Under 15 minutes from signup to first sent email.

SendGrid setup: Navigate a feature-dense dashboard built across multiple acquisitions, configure API key scopes, handle a multi-step domain verification process, understand the difference between Marketing Campaigns and the transactional API, configure suppressions. 45 minutes on a good day.

Template writing:

Resend uses React Email. Your email templates are JSX components that live in your codebase:

import { Html, Text, Button } from "@react-email/components";

export function WelcomeEmail({ name }) {
  return (
    <Html>
      <Text>Welcome, {name}</Text>
      <Button href="https://yourapp.com">Get started</Button>
    </Html>
  );
}

SendGrid uses Handlebars syntax in a separate visual template editor. It works but it is disconnected from your codebase and feels like a different product.

API design:

Resend is a single clean endpoint. SendGrid's API has accumulated complexity from years of additions — the personalizations array, legacy v2 endpoints still coexisting with v3, and more configuration options than most developers need.

For a FastAPI backend the difference is tangible. Resend's Python SDK sends an email in 5 lines. SendGrid's SDK works but requires more boilerplate and configuration.

Pricing Comparison

VolumeResendSendGrid
Free3,000/month (100/day cap)60-day trial then paid only
50,000/month$20/month$19.95/month
100,000/month$90/month$34.95/month
500,000/monthCustomCustom

The honest finding most articles skip:

At 50,000 emails per month the pricing is nearly identical. At 100,000 emails per month SendGrid is significantly cheaper — $34.95 versus Resend's $90. That gap matters at scale.

However, SendGrid charges $30 per month per dedicated IP and overage rates differ. The true cost comparison depends on your exact usage pattern.

Free tier reality:

This is the most important practical difference for early-stage projects. Resend's 3,000 per month free tier is permanent. SendGrid's free tier is gone — new accounts get a 60-day trial at 100 emails per day, then $19.95 per month regardless of volume.

For a side project or early-stage SaaS making no revenue, that difference is the entire decision.

Deliverability

Both deliver reliably when configured correctly. The difference is in setup complexity and scale.

Resend uses shared IP pools by default with solid maintenance. Domain authentication is two DNS records and automatic verification. For most transactional email use cases at under 100,000 emails per month, Resend's deliverability is indistinguishable from SendGrid in practice.

SendGrid has 15 years of ISP relationships and battle-tested infrastructure. At very high volume or enterprise scale, that history and dedicated IP infrastructure matters. Dedicated IPs are available on SendGrid's Pro plan at $89.95 per month — Resend's dedicated IPs are enterprise-only.

Neither matches Postmark on raw deliverability for mission-critical transactional email. If inbox placement is the primary concern, that is a separate conversation.

Features

Resend has:

  • React Email integration
  • Clean REST API and typed SDKs
  • Webhooks for email events
  • 30-day log retention
  • Basic email analytics
  • Broadcast (marketing email) as a separate product

SendGrid has everything above plus:

  • Visual drag-and-drop email editor
  • Marketing Campaigns with segmentation and A/B testing
  • Email validation API
  • Inbound email parsing
  • Subuser management for agencies or multi-tenant apps
  • IP warming automation
  • Advanced analytics and engagement metrics
  • 15+ years of third-party integrations

If you need the SendGrid-only features, Resend is not a replacement. If you do not need them, you are paying for and navigating complexity you do not use.

Migration: SendGrid to Resend

If you are on SendGrid and evaluating a switch, the technical migration is straightforward. The real cost is time, testing, and the 48-hour parallel-running period.

1. Sign up on Resend and verify your domain
2. Install Resend SDK — pip install resend or npm install resend
3. Update API key environment variable
4. Rewrite send calls — typically 5-10 lines of code per template
5. Rebuild templates in React Email if you want the DX benefit
   (or pass raw HTML if you want faster migration)
6. Update webhook endpoints for bounce and complaint handling
7. Run both providers in parallel for 48 hours
8. DNS changes take up to 24 hours to propagate

The main consideration: if you have been on SendGrid's shared IPs for years, your sending domain has an established reputation there. Starting on Resend's shared IPs means rebuilding that reputation. Inbox placement may dip slightly for the first few weeks before normalizing.

When to Pick Resend

  • Starting a new project in 2026
  • Building with Next.js, React, or a modern frontend
  • FastAPI or Django backend where clean SDK matters
  • Under 100,000 emails per month
  • Transactional email only — no marketing campaigns
  • Want a permanent free tier to validate before paying
  • Developer experience is a priority

When to Pick SendGrid

  • Sending above 100,000 emails per month where pricing favors SendGrid
  • Need marketing campaigns and transactional email in one platform
  • Need inbound email parsing
  • Need subuser management for an agency or multi-tenant product
  • Your team already knows SendGrid and switching cost is not justified
  • Enterprise compliance requirements that benefit from 15 years of track record

Bottom Line

For a new project in 2026, Resend is the better starting point. The developer experience is genuinely superior, the permanent free tier covers early-stage projects, and for most transactional email use cases at under 100,000 emails per month it delivers everything you need.

SendGrid is not a bad product. At scale it is cheaper. Its marketing features are more mature. Its infrastructure has more history. But for a developer choosing between the two for a new SaaS or side project, the answer is Resend — you can always migrate later if you outgrow it, and most projects never will.

One honest caveat: Resend doubled some Scale tier prices in October 2024. The pricing trajectory is worth watching if you are planning long-term.

Pricing verified June 2026. Verify current pricing on each provider's official page before committing.

Pricing verified on June 29, 2026