Compare Tools

AWS SES vs Resend

Live comparisonView as JSON
AWS SES
cloud$0.10/1k emails
Resend
cloudFree (100 emails/day)
Transactional
Marketing
Inbound Parsing
Template Engine
Deliverability Tools
Pricing
$0.10/1k emailsFree within EC2 (62k/mo)Dedicated IPs from $25/mo
Free (100 emails/day)$20/mo ProCustom Enterprise
Open Source
Self-Hosted
SDK Languages
pythonjavascriptgojavarubycsharpphp
pythonjavascripttypescriptgorubyjavaphpelixir
Frameworks
None listed
None listed
Compliance
soc2hipaagdprpci-dssiso27001
soc2gdpr
Best For
Cheapest option at scale for AWS-native stacks — pay-per-email pricing with no monthly minimums
Modern developer experience for transactional email — clean API, React Email support, great docs
Limitations
Bare-bones developer experience; no built-in templates or analytics dashboard; setup requires DNS configuration and sending reputation warm-up; support requires AWS support plan
Newer platform with smaller track record; no marketing email features; deliverability reputation still building compared to SendGrid

Supported Not supported Unverified

Resend and AWS SES represent opposite ends of the managed-vs.-infrastructure spectrum. Resend ships an official MCP server and Svix-backed webhooks. AWS SES has no MCP server and routes events through SNS. AWS SES provides the most granular credential scoping via IAM and data residency within an AWS region. The verdict depends on whether tool-call surface or infrastructure ownership matters more.

Where Resend wins

  • MCP server for agent tool calls. Resend ships an official MCP server covering send, list/get emails, domain management, audience and contact management, and API key management. AWS SES has no documented MCP server. Integrating SES into an MCP agent requires building a custom adapter that wraps the AWS SDK in an MCP tool schema.

  • Svix webhook infrastructure with idempotency-key headers. Resend delivers events via Svix with idempotency-key headers on every delivery. It retries 6 times with exponential backoff and includes HMAC-SHA256 signature verification. AWS SES publishes delivery events to SNS topics, not directly to HTTP endpoints. Consuming those events requires configuring an SNS HTTP subscription or Lambda function. SNS does not provide idempotency-key headers.

Where AWS SES wins

  • IAM credential scoping for agent identities. AWS IAM policies restrict an agent credential to specific SES API actions (ses:SendEmail, ses:SendRawEmail), specific verified sender identities as resource ARNs, and condition keys such as ses:FromAddress and ses:Recipients. This is action-level, resource-level, and condition-level scoping in a single policy. No other provider offers equivalent resource-condition scoping. Resend's "Sending Access" keys support optional domain restriction. The IAM model goes substantially further.

  • Data residency and compliance. AWS SES runs within a specific AWS region. All email content, events, and configuration metadata stay in that region unless explicitly routed elsewhere. SES participates in AWS's SOC 2, HIPAA BAA, and FedRAMP programs. For agent pipelines handling regulated data, SES's AWS compliance boundary is unmatched by a managed provider. Resend is cloud-hosted with US and EU regions. It does not offer self-hosting or equivalent compliance certification breadth.

The agentic difference

Resend is the faster path to a working agent email integration. The MCP server works with any MCP-compatible runtime without custom code. Svix webhooks provide reliable delivery with idempotency guarantees without provisioning SNS topics or Lambda functions. Send, receive delivery events, and handle bounces in minutes.

AWS SES has no MCP server and routes all events through SNS. Building an SES-based email tool requires writing an MCP adapter, configuring SNS subscribers, and handling retries. The payoff is infrastructure ownership. IAM provides the tightest credential model available. SES's AWS compliance posture covers workloads a managed provider cannot.

When to pick which

  • Pick Resend when tool-call surface and webhook reliability without custom infrastructure matter. Pick Resend when the workload lacks data residency or compliance requirements that mandate AWS.

  • Pick AWS SES when the agent pipeline runs in AWS and requires IAM-level credential scoping per sender identity. Pick AWS SES when the workload must satisfy HIPAA, FedRAMP, or SOC 2 requirements within the AWS compliance boundary.

Last verified: 2026-05-09