Amazon SES vs Mailgun
Raw infrastructure versus a developer-leaning managed sender.
What matters for developers picking email infrastructure
The question here is which one a backend engineer would rather operate. That means SDK depth in the language already in use, whether a retry can safely be replayed, how much the event log tells you when a customer says the email never arrived, and whether the pricing curve stays sane as volume grows.
| Priority | Amazon SES | Mailgun |
|---|---|---|
| DX score | 4/10 | 7/10 |
| SDKs | node, python, go, ruby, php, java, rust, dotnet | node, python, go, ruby, php, java |
| Idempotency keys | No | No |
| Operating since | 2011 | 2010 |
| Event stream | Yes | Yes |
| Best published rate per 1,000 | $0.10 | $0.70 |
| Webhooks | No | Yes |
| Deliverability | Inherits AWS IP reputation. Generally good once warmed and configured, but the sender does the warming and complaint handling. | Generally good, with deliverability monitoring tools available on higher tiers. Inbound routes and suppressions are battle-tested. |
| Free tier | Up to $200 in AWS Free Tier credits for new accounts | 100/day permanent free plan |
For a developer-owned stack running password resets, receipts, and magic links shipped from application code, Mailgun takes developer experience, operating track record, and webhook coverage, while Amazon SES takes SDK breadth and best published rate per 1,000. On free tier, Amazon SES offers Up to $200 in AWS Free Tier credits for new accounts against 100/day permanent free plan from Mailgun. That ordering reflects this audience. Weigh the same table differently and the answer changes.
Side by side
| Feature | Amazon SES | Mailgun |
|---|---|---|
| DX score | 4/10 | 7/10 |
| SDKs | node, python, go, ruby, php, java, rust, dotnet | node, python, go, ruby, php, java |
| Webhooks | No | Yes |
| Deliverability | Inherits AWS IP reputation. Generally good once warmed and configured, but the sender does the warming and complaint handling. | Generally good, with deliverability monitoring tools available on higher tiers. Inbound routes and suppressions are battle-tested. |
| Free tier | Up to $200 in AWS Free Tier credits for new accounts | 100/day permanent free plan |
| Tagline | Cheapest at scale, most setup work. | Developer-leaning email infra, owned by Sinch. |
| Starts at | $0.10 per 1,000 emails | $15/mo for 10,000 emails (Basic) |
| Pricing model | pay-as-you-go | tiered |
| API | Yes | Yes |
| SMTP | Yes | Yes |
| Templates | basic | rich |
| React Email | No | No |
| Inbound | Yes | Yes |
| Multi-tenant | No | Yes |
| Idempotency | No | No |
| Dedicated IP | Yes | Yes |
| Best for | High-volume senders with AWS infrastructure, cost-optimized workloads, and teams comfortable wiring SNS/Lambda/EventBridge for events. | Technical teams that want SMTP relay plus advanced routing. |
Amazon SES
- ›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
- ›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
Mailgun
- ›Strong SMTP relay support, useful when migrating off self-hosted Postfix
- ›Inbound routes with regex matching
- ›Validation and parsing tools available
- ›Sub-accounts for agency use cases
- ›Overage pricing and plan differences need close review at scale
- ›Documentation is comprehensive but occasionally out of date
- ›No idempotency keys
- ›Sinch ownership has moved focus toward enterprise