Resend vs SendGrid

What Resend is

Resend is a transactional email API aimed at developers, with a clean SDK and React-based email templates. It is built for the case where email is part of the product: sending is an API call, and templates are components rather than a drag-and-drop editor. That makes it a poor fit for marketing teams who need to compose campaigns without a developer.

What SendGrid is

SendGrid delivers email at scale through an API or SMTP, with deliverability tooling and analytics. It handles volume reliably and the deliverability tooling is mature, which is why it remains a default at scale. Support and shared-IP reputation are the recurring complaints, and dedicated IPs cost more.

What Resend is built to do

Developer-first API

Sends mail through a small API with official SDKs for common runtimes.

React email templates

Builds message templates as components instead of HTML tables.

Domain authentication

Guides SPF, DKIM and DMARC setup for the sending domain.

What SendGrid is built to do

API and SMTP sending

Accepts mail through a REST API or standard SMTP relay.

Deliverability tooling

Manages IP warm-up, authentication and reputation monitoring.

Event webhooks

Posts delivery, bounce and engagement events to your systems.

Choose Resend if

• Developers sending transactional email from an application.

Choose SendGrid if

• Applications sending large volumes of email.

Resend: pros & cons

• Simple API and good developer experience
• React Email templates keep markup maintainable
• Generous free tier
• Newer than established providers
• Fewer deliverability controls than enterprise tools
• Marketing email features are limited

SendGrid: pros & cons

• Handles very high volume
• Mature API and libraries
• Detailed delivery analytics
• Shared IP reputation affects deliverability
• Support quality is a common complaint
• Interface is dated