Amazon SES vs Postmark: Which is Better in 2026?
Amazon SES and Postmark are both Email/Messaging tools, made for different people. Amazon SES is for teams on AWS sending high volumes who will set up deliverability themselves to keep cost per email low. Postmark is for SaaS teams that care most about transactional email arriving fast, with message history they can search.
Quick verdict
There’s no single winner; pick on your constraint. Choose Amazon SES if you send millions of emails and cost per email decides. Choose Postmark if you want transactional and broadcast email on separate streams.
Amazon SES vs Postmark: Side by Side
| Amazon SES | Postmark | |
|---|---|---|
| Category | Email/Messaging | Email/Messaging |
| What it is | Email sending service (AWS) | Transactional email service |
| Channels | Outbound and inbound email | Transactional and broadcast streams |
| Free access | AWS Free Tier credits for new accounts | 100 emails a month |
| How you pay | $0.10 per 1,000 emails | Monthly by volume, plus overage per 1,000 |
| What you manage | You manage domains, reputation and tooling | API and SMTP; dedicated IP add-on at volume |
| Pricing | Free · paid from $0.1/mo | Free · paid from $15/mo |
| Starting price | Free tier available | Free tier available |
| Free tier | ||
| Best for | Email/Messaging: high volume, AWS, pay per email | Email/Messaging: transactional, deliverability, message history |
Pros & Cons
- $0.10 per 1,000 emails
- Massive scalability
- Tight AWS integration
- Pay only for what you send
- Bare-bones (you build the rest)
- Setup/warmup is on you
- No nice dashboard
- Separate transactional and broadcast streams
- Searchable message history
- Low overage on Pro and Platform
- Simple published pricing
- Free plan is only 100 emails a month
- Dedicated IP only from 300,000 emails a month
- Basic retention fixed at 45 days
Key Features Compared
Amazon SES
- Outbound: $0.10 per 1,000 emails, plus $0.12 per GB of attachments
- Inbound: $0.10 per 1,000 emails plus $0.09 per 1,000 incoming chunks
- Dedicated IPs: $24.95 a month per IP, or managed for $15 a month plus $0.08 per 1,000 emails
- Virtual Deliverability Manager: $0.07 per 1,000 emails plus query fees
- New AWS customers get up to $200 in Free Tier credits usable on SES
Postmark
- Free developer plan: 100 emails a month
- Basic: $15 a month for 10,000 emails, $1.80 per extra 1,000, 45-day retention
- Pro: $16.50 a month for 10,000, $1.30 per extra 1,000, retention up to 365 days
- Platform: $18 a month for 10,000, $1.20 per extra 1,000, unlimited broadcast streams
- Dedicated IP add-on $50 a month for senders at 300,000+ emails a month
Choose Amazon SES if…
- Budget is tight: paid plans start lower ($0.1/mo vs $15/mo).
- You send millions of emails and cost per email decides.
- Your app already runs on AWS.
- You have someone to handle domain setup and reputation.
Choose Postmark if…
- You want transactional and broadcast email on separate streams.
- You need searchable message history for support.
- Your volume is modest and predictable.
Frequently Asked Questions
Is Amazon SES better than Postmark?⌄
There’s no single winner; pick on your constraint. Choose Amazon SES if you send millions of emails and cost per email decides. Choose Postmark if you want transactional and broadcast email on separate streams.
What is the difference between Amazon SES and Postmark?⌄
What it is. Amazon SES: Email sending service (AWS). Postmark: Transactional email service. Channels. Amazon SES: Outbound and inbound email. Postmark: Transactional and broadcast streams. Free access. Amazon SES: AWS Free Tier credits for new accounts. Postmark: 100 emails a month. How you pay. Amazon SES: $0.10 per 1,000 emails. Postmark: Monthly by volume, plus overage per 1,000. What you manage. Amazon SES: You manage domains, reputation and tooling. Postmark: API and SMTP; dedicated IP add-on at volume.
Amazon SES vs Postmark: which is cheaper?⌄
Amazon SES pricing: Free · paid from $0.1/mo. Postmark pricing: Free · paid from $15/mo. Confirm current pricing on each tool's official site, as plans change.
When should I skip both Amazon SES and Postmark?⌄
Skip Amazon SES if you want templates, logs and a friendly dashboard out of the box. Resend or Postmark give you that. Skip Postmark if you need a bigger free allowance. Resend gives 3,000 emails a month.
Sources · tool facts checked November 2026
See more options in our guide to the best email/messaging tools for startups.
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