head to head
Resend vs Amazon SES
Premium DX wrapper versus raw infrastructure.
What matters for SaaS product teams
A SaaS product sends on behalf of its customers, so the deciding factors are tenant isolation, whether suppressions can be scoped rather than global, and whether support can answer why one specific account did not receive one specific email. Lifecycle automation and transactional sending usually need to coexist.
| Priority | Resend | Amazon SES |
|---|---|---|
| Multi-tenant | No | No |
| Event stream | Yes | Yes |
| Suppressions API | Yes | Yes |
| Operating since | 2023 | 2011 |
| Scheduling | Yes | No |
| Best published rate per 1,000 | $0.35 | $0.10 |
| 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. | Inherits AWS IP reputation. Generally good once warmed and configured, but the sender does the warming and complaint handling. |
| Webhooks | Yes | No |
| Starts at | $20/mo for 50,000 emails | $0.10 per 1,000 emails |
For a multi-tenant SaaS product running trial expiry notices, dunning, onboarding sequences, and per-tenant transactional mail, the split is even: Resend takes scheduling and webhook coverage, Amazon SES takes operating track record and best published rate per 1,000. Neither pulls ahead on this audience's priorities. On entry price, Resend offers $20/mo for 50,000 emails against $0.10 per 1,000 emails from Amazon SES. That ordering reflects this audience. Weigh the same table differently and the answer changes.
Side by side
| Feature | Resend | Amazon SES |
|---|---|---|
| Multi-tenant | No | No |
| 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. | Inherits AWS IP reputation. Generally good once warmed and configured, but the sender does the warming and complaint handling. |
| Webhooks | Yes | No |
| Starts at | $20/mo for 50,000 emails | $0.10 per 1,000 emails |
| Tagline | Email API tightly coupled to React Email. | Cheapest at scale, most setup work. |
| Free tier | 3,000/mo permanent, capped at 100/day, one domain | Up to $200 in AWS Free Tier credits for new accounts |
| Pricing model | tiered | pay-as-you-go |
| API | Yes | Yes |
| SMTP | Yes | Yes |
| SDKs | node, python, go, ruby, php, rust, java, elixir, cli | node, python, go, ruby, php, java, rust, dotnet |
| Templates | react-email | basic |
| React Email | Yes | No |
| Inbound | Yes | Yes |
| Idempotency | Yes | No |
| Dedicated IP | Yes | Yes |
| DX score | 8/10 | 4/10 |
| Best for | Early-stage React or Next.js product teams sending under 50k/mo. | High-volume senders with AWS infrastructure, cost-optimized workloads, and teams comfortable wiring SNS/Lambda/EventBridge for events. |
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
Amazon SES
pros
- ›Cheapest cost per email, by a large margin at scale
- ›Built for billions: handles the largest sender workloads in the world
- ›Multi-region (us-east-1, us-west-2, eu-west-1, ap-south-1, and more) with regional reputation pools
- ›Native integration with Lambda, SNS, SQS, EventBridge, and CloudWatch
- ›Dedicated IPs and managed dedicated IP pools
- ›VPC endpoints for sending from private networks
- ›Inbound receiving with S3 and Lambda for fully serverless email pipelines
- ›SDKs in every language AWS supports, from Rust to .NET
- ›IAM-based authentication; no separate API keys to manage
cons
- ›Sandbox mode requires manual approval before sending to non-verified recipients
- ›No native webhooks; events route through SNS and you write your own glue
- ›No dashboard for message-level debugging
- ›Bounce and complaint handling is the sender's responsibility
- ›Templates are minimal
- ›Operational overhead is real if you are not already on AWS