Amazon SES API
Amazon Simple Email Service — a highly scalable, low-cost email sending API for transactional, marketing, and bulk email with SMTP and REST interfaces.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
IAM policies with ses:SendEmail, ses:SendRawEmail permissions. Domain/email verification required. DKIM signing enforced on verified domains. SOC2, ISO27001, FedRAMP. Sandbox mode by default — request production access for real sending.
⚡ Reliability
Best When
You're on AWS, need the lowest possible per-email cost for high volume sending, and have engineering resources to manage deliverability.
Avoid When
You need a managed email platform with marketing features, deliverability tooling, or a simpler developer experience.
Use Cases
- • Sending transactional emails (receipts, notifications, alerts) at low cost
- • High-volume bulk email campaigns for marketing
- • Building custom email infrastructure with full control over sending
- • Receiving and processing inbound email for automated workflows
- • Monitoring email deliverability with bounce/complaint tracking
Not For
- • Non-AWS workloads where setup complexity isn't justified
- • Teams needing email marketing UIs or drag-and-drop templates
- • Simple transactional email without AWS infrastructure (use Resend or Postmark)
Interface
Authentication
AWS SigV4 for API calls. SMTP credentials (derived from IAM) for SMTP interface. IAM policies for fine-grained access control. Least-privilege IAM recommended.
Pricing
Extremely low cost — $100 sends 1 million emails. Sandbox mode (default) restricts to verified addresses. Request production access to send to unverified addresses.
Agent Metadata
Known Gotchas
- ⚠ New accounts start in sandbox mode — can only send to verified email addresses until production access approved
- ⚠ Production access requires manual approval from AWS — can take hours/days
- ⚠ Must verify sending domain and From address before sending
- ⚠ Bounce and complaint rates must be monitored — high rates get account suspended
- ⚠ Configuration sets required for proper tracking and event notifications
- ⚠ SES v2 API (newer) and SES v1 (legacy) exist with different SDKs — use v2 for new projects
Alternatives
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Scores are editorial opinions as of 2026-03-07.