Resend vs SendGrid: Modern Email API vs the Twilio-Owned Incumbent

Resend leads with 8+ SDKs, React Email, and best-in-class documentation. SendGrid has a mature but dated API. Sequenzy offers a solid SaaS-focused API.

Sequenzy leads with AI-powered automation. SendGrid has basic marketing campaigns. Resend has no marketing features.

Resend has purpose-built transactional infrastructure with 99%+ inbox placement. SendGrid's deliverability has declined under Twilio. Sequenzy separates streams.

SendGrid handles the highest volumes with proven enterprise infrastructure. Resend scales well for most use cases. Sequenzy scales with volume-based pricing.

Sequenzy starts at $19/mo with AI automation. Resend starts at $20/mo for 50K. SendGrid starts at $19.95/mo for 50K but adds complexity with overages.

Sequenzy has AI-assisted template creation. SendGrid has a basic drag-and-drop builder. Resend uses code-based React Email.

Sequenzy tracks revenue attribution. SendGrid has detailed delivery analytics and email activity feed. Resend tracks basic delivery metrics.

SendGrid and Sequenzy tie. SendGrid has the Twilio ecosystem. Sequenzy has native SaaS billing integrations. Resend integrates with Vercel/Supabase.

Resend has responsive support. SendGrid's support has declined significantly under Twilio ownership. Sequenzy offers guided setup assistance.

Sequenzy is purpose-built for SaaS. SendGrid has basic marketing features. Resend is category-agnostic infrastructure.

Is Resend or SendGrid better for transactional email?

Resend is better for new projects. It offers superior developer experience with 8+ SDKs, React Email support, and cleaner APIs. SendGrid has a larger ecosystem and handles higher volumes, but its developer experience has stagnated under Twilio ownership and many users report declining support quality. For teams that also need marketing automation, Sequenzy combines both in one platform starting at $19/mo.

Is SendGrid still reliable after Twilio acquisition?

SendGrid remains functional but has experienced notable issues since the Twilio acquisition. Many users report slower support response times, unexpected account suspensions, complex billing, and deliverability regressions. The platform is still widely used but is no longer the default recommendation for new projects. Resend, Postmark, and Amazon SES are common replacements.

Which is cheaper, Resend or SendGrid?

They are similar in price for transactional email. Resend starts at $20/mo for 50K emails. SendGrid starts at $19.95/mo (Essentials) for 50K emails. SendGrid's pricing becomes more complex with overage charges, IP pools, and add-ons. Resend's pricing is simpler. Sequenzy starts at $19/mo for 15K emails but includes marketing automation that neither Resend nor SendGrid offers at that price.

Does SendGrid have marketing automation?

SendGrid has basic marketing campaign features including a drag-and-drop editor, contact management, and simple automation. However, its marketing features are limited compared to dedicated platforms. Most teams use SendGrid for transactional email only and pair it with a separate marketing tool. Sequenzy combines both marketing automation and transactional email in one platform.

Which has better deliverability, Resend or SendGrid?

Resend has better deliverability for transactional email with 99%+ inbox placement on dedicated infrastructure. SendGrid's deliverability has become inconsistent — while it works well for many users, others report IP reputation issues, especially on shared IP pools. Resend's focused approach to transactional email gives it an edge in delivery speed and inbox placement.

Can Resend handle high-volume email sending?

Yes. Resend handles millions of emails with low latency. For most SaaS companies and startups, Resend scales well. However, for extremely high volumes (hundreds of millions per month), SendGrid or Amazon SES may be more suitable due to their enterprise-grade infrastructure. Evaluate based on your actual volume needs rather than theoretical maximums.

Does Resend have a visual email builder?

No. Resend uses React Email for template development — you build email templates as React components and preview them locally. This is better for developers but requires coding skills. SendGrid has a basic drag-and-drop editor. Sequenzy offers an AI-assisted visual builder for non-technical users.

What are the best alternatives to SendGrid?

The best alternatives to SendGrid for transactional email are: Resend (best DX, modern API), Postmark (best deliverability, established), Amazon SES (cheapest at scale), Mailgun (good API with email validation), and SparkPost (enterprise analytics). For teams needing both marketing and transactional, Sequenzy ($19/mo) combines both with AI automation.

Should I migrate from SendGrid to Resend?

Consider migrating if you experience deliverability issues on SendGrid, want better developer experience, or need React Email support. The migration is straightforward — install Resend's SDK, port templates, and update API calls. Keep SendGrid if you rely on its marketing features, need extremely high volumes, or use Twilio ecosystem integrations heavily.

Can I use Resend or SendGrid with Sequenzy?

Yes, but it may be unnecessary. Sequenzy includes transactional email with separated sending streams. You could use Sequenzy for marketing automation and Resend or SendGrid for transactional email, but Sequenzy handles both. The main reason to keep a dedicated transactional API alongside Sequenzy would be if you need React Email support (Resend) or extremely high transactional volumes (SendGrid).