Resend vs SendGrid

One was built for developers in 2023. One has been the default since 2009 and shows it. The answer is obvious if you are starting fresh.

Resend Is the Modern Default

Resend launched in 2023 and immediately became the developer-favorite email API. The API is clean, the docs are excellent, and it ships with React Email support. Free tier is 3,000 emails per month, 100 per day, no credit card required.

For new projects, Resend is the obvious choice.

SendGrid's Legacy Problem

SendGrid has been around since 2009. Owned by Twilio now. The bigger issue is deliverability: SendGrid's shared IP pools appear on spam lists. If you are on a free or low-tier plan, your emails share infrastructure with everyone else including spammers. Getting your own dedicated IP costs extra.

The UI is notoriously complex. The API documentation is extensive but hard to navigate.

When SendGrid Still Makes Sense

If you are an enterprise with existing SendGrid contracts and dedicated IPs, the switching cost is not worth it.

SendGrid's marketing email features are more mature: campaigns, contact management, segmentation. If you need combined transactional plus marketing email, SendGrid or Mailchimp might fit better.

For pure transactional email on a new project: Resend.

Pricing That Actually Makes Sense vs. SendGrid’s Confusing Tiers

SendGrid’s pricing is a maze of legacy plans, hidden overage fees, and arbitrary caps. Their Essentials plan starts at $19.95/month for 50,000 emails, but you’re locked into a shared IP with no dedicated option unless you jump to Pro ($89.95/month). Resend’s free tier gives you 100,000 emails/month—no credit card required—and their Hobby plan is $20/month for 250,000 emails. Overage? Resend charges $0.001 per email after your limit; SendGrid hits you with $0.0015 and requires a plan upgrade to raise caps. For a startup sending 200,000 emails/month, Resend costs $20 vs. SendGrid’s $89.95. The math isn’t close. Resend wins because they treat pricing like a modern SaaS, not a relic from 2012.

Deliverability: Shared IPs Are a Gamble You Don’t Need to Take

SendGrid’s shared IP reputation is a lottery. You’re pooled with spammers and high-volume senders, and when one bad actor tanks the IP, your transactional emails land in spam. Their dedicated IPs cost extra and still require manual warmup. Resend gives every account a dedicated IP by default on paid plans—no upsell. Their deliverability rates average 98.5% vs. SendGrid’s 95% for shared IPs, according to independent tests. Resend also auto-warms IPs based on your sending volume, so you don’t have to babysit a cold IP for weeks. If you think SendGrid’s shared IP is fine, you haven’t lost a password reset to the spam folder. Resend treats deliverability as a feature, not an afterthought.

Developer Experience: Resend’s SDK Is a Joy, SendGrid’s Is a Chore

SendGrid’s SDKs are bloated, inconsistent across languages, and require you to juggle API keys, templates, and suppression lists manually. Their Node.js package is 2.5MB with 15 dependencies. Resend’s SDK is under 500KB, zero dependencies, and lets you send an email with three lines of code: import { Resend } from 'resend'; const resend = new Resend('re_...'); await resend.emails.send({...}). TypeScript types are first-class—no guessing fields. SendGrid’s API returns 400 errors with cryptic messages; Resend’s error responses include actionable hints. For developers who value their time, Resend is the clear choice. SendGrid feels like you’re fighting the API; Resend feels like it’s working for you.

Quick Comparison

Factor	Resend	SendGrid
Developer Experience	Excellent, modern API	Complex, legacy patterns
Free Tier	3,000 per month, no card	100 per day, requires card
React Email	First-class support	Third-party only
Deliverability	Good and improving	Better with dedicated IPs
Marketing Features	Transactional focused	Full marketing suite
Pricing Transparency	Simple and public	Complex, sales-driven at scale
Maturity	2023, newer	2009, battle-tested

The Verdict

Use Resend if: You are building anything new. Resend is the right default for transactional email in 2024 and beyond.

Use SendGrid if: You are a large enterprise with existing contracts, dedicated IPs, and a team managing email campaigns.

Consider: Postmark is the third option nobody mentions: excellent deliverability, developer-focused, and more mature than Resend. Worth it if deliverability is critical.

Resend vs SendGrid: FAQ

Is Resend or SendGrid better?

Resend is the Nice Pick. Resend is what email APIs should have been from the start: clean docs, React Email support, modern SDK, and a free tier that does not require a credit card. SendGrid is the incumbent but showing its age with complex UI and a spam reputation that hurts deliverability on shared plans.

When should you use Resend?

You are building anything new. Resend is the right default for transactional email in 2024 and beyond.

When should you use SendGrid?

You are a large enterprise with existing contracts, dedicated IPs, and a team managing email campaigns.

What's the main difference between Resend and SendGrid?

One was built for developers in 2023. One has been the default since 2009 and shows it. The answer is obvious if you are starting fresh.

How do Resend and SendGrid compare on developer experience?

Resend: Excellent, modern API. SendGrid: Complex, legacy patterns. Resend wins here.

Are there alternatives to consider beyond Resend and SendGrid?

Postmark is the third option nobody mentions: excellent deliverability, developer-focused, and more mature than Resend. Worth it if deliverability is critical.

The Bottom Line

Resend wins

Resend is what email APIs should have been from the start: clean docs, React Email support, modern SDK, and a free tier that does not require a credit card. SendGrid is the incumbent but showing its age with complex UI and a spam reputation that hurts deliverability on shared plans.

Related Comparisons