Amazon SES vs Postmark
A detailed comparison to help you choose between Amazon SES and Postmark.
Quick Verdict
5.0/5
Amazon SES
268 reviews
4.5/5
Postmark
398 reviews
Amazon SES is rated higher (5.0 vs 4.5). Amazon Simple Email Service is the cheapest bulk email option — $0.10 per 1,000 emails. EC2-hosted apps get 62,000 emails/month free. SMTP and API. Requires AWS account and setup effort. Postmark is a transactional email service with best-in-class inbox delivery rates. Focuses solely on transactional email (not marketing). Detailed bounce analytics, message streams, and server-side DKIM.
 Amazon SES Cheapest bulk email API — $0.10 per 1,000 emails | Postmark Fastest transactional email delivery — inbox-focused | |
|---|---|---|
| Overview | ||
| Rating | 5.0 (268 reviews)✓ | 4.5 (398 reviews) |
| Pricing model | freemium | freemium |
| Starting price | Free tier available | Free tier available |
| Best for | AWS-based applications sending bulk email at scale who want the lowest per-email cost available | SaaS developers who need the most reliable transactional email delivery for password resets and notifications |
| Tags | ||
| Tags | free tierapi accessus datacentereu datacenterapac datacenter | free tierapi access |
| Visit Amazon SES → | Visit Postmark → | |
Amazon SES
Pros
- + $0.10/1,000 emails — industry's lowest price
- + Free if sending from EC2 (62,000/month)
- + AWS reliability
Cons
- - Complex AWS setup and IAM configuration
- - Not beginner-friendly
- - Requires warming IP reputation
Postmark
Pros
- + Best transactional email delivery rates
- + Detailed bounce and delivery analytics
- + Focus on transactional — no deliverability conflicts with marketing email
Cons
- - More expensive than SendGrid at volume
- - Transactional only — no marketing email
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