head to head
Resend vs SendGrid
A 2023 API-first entrant against the Twilio-owned incumbent that retired its free tier.
What matters for teams choosing a transactional API
Judged purely as an API. What the request contract guarantees on retry, how complete the webhook event coverage is, whether suppressions are readable and writable programmatically, and how much the message log retains when something needs debugging in production.
| Priority | Resend | SendGrid |
|---|---|---|
| Idempotency keys | Yes | No |
| Webhooks | Yes | Yes |
| Event stream | Yes | Yes |
| Operating since | 2023 | 2009 |
| Suppressions API | Yes | Yes |
| Best published rate per 1,000 | $0.35 | $0.40 |
| Batch sending | Yes | Yes |
| SDKs | node, python, go, ruby, php, rust, java, elixir, cli | node, python, go, ruby, php, java, dotnet |
| Deliverability | Acceptable, but the deliverability track record is shorter than Postmark or SendGrid. Independent inbox-placement studies vary. Dedicated IPs are available on higher tiers. | Established delivery infrastructure, but shared-IP reputation can vary and the product is broader than pure transactional delivery. |
For a transactional workload running high-frequency programmatic sends where a missed delivery is a product failure, Resend takes idempotency keys, best published rate per 1,000, and SDK breadth, while SendGrid takes operating track record. That ordering reflects this audience. Weigh the same table differently and the answer changes.
Side by side
| Feature | Resend | SendGrid |
|---|---|---|
| Webhooks | Yes | Yes |
| SDKs | node, python, go, ruby, php, rust, java, elixir, cli | node, python, go, ruby, php, java, dotnet |
| Deliverability | Acceptable, but the deliverability track record is shorter than Postmark or SendGrid. Independent inbox-placement studies vary. Dedicated IPs are available on higher tiers. | Established delivery infrastructure, but shared-IP reputation can vary and the product is broader than pure transactional delivery. |
| Tagline | Email API tightly coupled to React Email. | Twilio-owned veteran with broad SDK coverage. |
| Free tier | 3,000/mo permanent, capped at 100/day, one domain | 60-day free trial only (permanent free tier was removed May 2025) |
| Starts at | $20/mo for 50,000 emails | $19.95/mo for 50,000 emails |
| Pricing model | tiered | tiered |
| API | Yes | Yes |
| SMTP | Yes | Yes |
| Templates | react-email | rich |
| React Email | Yes | No |
| Inbound | Yes | Yes |
| Multi-tenant | No | Yes |
| Idempotency | Yes | No |
| Dedicated IP | Yes | Yes |
| DX score | 8/10 | 6/10 |
| Best for | Early-stage React or Next.js product teams sending under 50k/mo. | Enterprises that want a single Twilio-backed vendor for email and SMS. |
Resend
pros
- ›Idiomatic SDKs across major languages
- ›React Email integration is the smoothest of any provider
- ›Idempotency keys supported
- ›Clean dashboard and event log
cons
- ›Volume pricing is significantly higher than AWS SES at large volumes
- ›Founded 2023, so deliverability track record and incident history are still building
- ›No drag-and-drop template editor; non-React stacks get a thinner experience
- ›Free tier is capped at 100 sends a day, so a 3,000/mo allowance cannot absorb a launch spike
- ›January 2024 breach exposed email metadata, contacts, and encrypted API tokens for all users; message bodies were not reached
- ›Status page logged roughly ten incidents in the three weeks to 2026-08-01, mostly outside the sending path: dashboard, webhooks, domain verification, and automations
- ›Single-region historically; multi-region setup is newer
- ›Smaller support footprint than Twilio SendGrid or Sinch Mailgun
SendGrid
pros
- ›Mature, broad SDK coverage
- ›Twilio backing means long-term operational stability
- ›Marketing platform alongside transactional
- ›Inbound parse webhook is well-documented
cons
- ›Removed the permanent free tier in May 2025
- ›No idempotency keys
- ›No API request logs for debugging
- ›Pricing climbs steeply across plan tiers; many features gated to higher SKUs
- ›Legacy v3 API patterns feel dated next to Resend or MailerSend