Amazon SES vs Postmark
We give Amazon SES a 2.8 GPA and Postmark a 2.2, out of 4.0. Amazon SES grades higher on value for money. They get the same grade on the free plan, features, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Amazon SES
AWS email sending and receiving, paid per 1,000 emails
Postmark
Transactional email API and SMTP, with broadcasts on a separate stream
How we grade them
| 2.8GPAAmazon SESGood | 2.2GPAPostmarkFair | |
|---|---|---|
| Value for money | AGraded on 50,000 emails a month, worked out from the listed rates: $0.16 per 1,000 on Essentials is $8 a month, and $0.10 per 1,000 à la carte is $5. That's far under anything else in this category. Attachments, dedicated IPs and other AWS services cost extra. | DGraded on 50,000 emails a month: $55 on Basic or $60.50 on Pro, billed monthly only. That's the dearest in this category at that volume, roughly twice the middle. Bootstrapped companies can ask for $75 of credit, which helps a bit. |
| Free plan and trial | CThere's no free allowance: every email is billed from the first one. New AWS customers do get up to $200 in Free Tier credits that work on SES, which goes a long way at these rates. | CA free developer plan that never expires and needs no card, but it's 100 emails a month with no way to buy more. That's for testing an integration, not running an app. |
| Features | BAPI, SMTP and AWS SDKs, receiving and routing with Mail Manager, address validation, shared, dedicated or your own IPs, deliverability insights, tenants and two-region sending. It covers the whole job, though alerts and dashboards lean on other AWS services. | BAPI and SMTP with SDKs, separate streams for app and bulk email, inbound email turned into JSON, templates, 45 days of message history and DMARC reports as an add-on. It covers the whole job; inbound needs Pro. |
| Ease of use | CJudged on how fast a developer sends a first email: verify a domain in AWS, then you're in a sandbox that only sends to verified addresses until AWS approves a limit increase. No rating on record. It's the slowest start in this category. | CJudged on how fast a developer sends a first email: official SDKs, a sandbox mode, ready-made templates for resets and receipts, and migration guides. You'll still verify a domain first. No rating on record. |
| Platforms and integrations | BWeb, with an API, SMTP and AWS SDKs, and it plugs into Amazon S3, SNS, CloudWatch and EC2. Outside AWS you're wiring it up yourself. No desktop or phone app, so B is the top. | BWeb, with an API and SMTP, plus Zapier, WordPress, Stripe, Slack, Supabase, Bubble, Netlify and Datadog. No desktop or phone app, so B is the top. |
| Best for | the cheapest sending if you already use AWS | app email kept apart from marketing sends |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Amazon SES and Postmark. How we grade
Where they differ
- Postmark has a free plan. Amazon SES does not, though it has a free trial.
- Amazon SES also covers email verification.
- Postmark also covers dMARC.
At a glance
| Amazon SES | Postmark | |
|---|---|---|
| Pricing | Free trial | Free plan |
| Starts at | Not published | $15 per month for 10,000 emails |
| Free plan | None | Free developer plan: 100 emails a month with no expiry and no overages, for testing an integration or a small side project. No credit card needed. |
| Free trial | New AWS customers get up to $200 in AWS Free Tier credits, usable on SES | None listed |
| Web | ||
| Made by | Amazon Web Services, Inc. | ActiveCampaign, LLC |
| Price read from | aws.amazon.com | postmarkapp.com |
| Checked | Oct 18, 2026 | Oct 18, 2026 |
Who each one suits
Amazon SES
- Developers already running their apps on AWS
- High-volume senders looking for a low price per email
- Teams comfortable setting up email through code and the AWS console
Postmark
- Software teams whose password resets and receipts must arrive fast
- Apps that need to receive and parse incoming email
- Bootstrapped founders, who can ask for $75 of credit
Worth knowing
Amazon SES
- Every email is billed: $0.10 per 1,000 on à la carte pricing or $0.16 per 1,000 on Essentials, with no free monthly allowance.
- New accounts start in a sandbox that only sends to verified addresses, with daily limits, until AWS approves a limit increase.
- Pro and Enterprise fees are charged per account per region, so sending from two regions doubles the fixed fee.
- Other AWS services used alongside it, such as S3 storage, SNS notifications or CloudWatch dashboards, are billed separately.
Postmark
- There is no tier between the free 100 emails a month and the 10,000-email paid plans.
- Billing is monthly only; the FAQ says annual plans are not offered yet.
- Basic has no inbound email processing and caps users at 4 and sending domains at 5.
- Dedicated IPs start at $50 a month per IP, need Pro or higher and 300,000 emails a month or more.
Key features
Amazon SES
- API, SMTP and AWS SDKs
- Send transactional and marketing email from any application through the SES API, an SMTP interface or an AWS SDK, after verifying your domain or address.
- Virtual Deliverability Manager
- Delivery and engagement insights with recommendations for reputation problems; the paid plans extend it to inbox placement tests and blocklist monitoring.
- Dedicated, shared or your own IPs
- Send from shared IPs, standard dedicated IPs at $24.95 a month each, managed dedicated IPs that SES warms up for you, or IP ranges you bring.
- Mail Manager for incoming email
- Receive email and route, allow or block it with rule sets, add security scanning from approved vendors, and archive sent and received mail.
- Email validation
- Checks recipient addresses before sending, at $0.01 per address checked through the API, or included up to a monthly allowance on Pro and Enterprise.
- Tenants and global endpoints
- Tenants keep each sender's reputation separate inside one account, and global endpoints spread sending across two AWS regions.
Postmark
- Email API and SMTP
- Send through a REST API with official SDKs or through SMTP, with batch sending, a sandbox mode and migration guides from other providers.
- Message streams
- Transactional and bulk or broadcast email run on separate sending infrastructure, so marketing sends do not affect password resets and receipts.
- Inbound email processing
- Pro and Platform turn incoming email into a JSON object and post it to a webhook URL your app handles.
- Templates
- Responsive templates for welcome emails, password resets and receipts, with a template editor and import tool.
- Message history and analytics
- 45 days of full message content by default, adjustable from 7 to 365 days, with bounce details, open and link tracking and a stats API.
- DMARC monitoring
- DMARC Digests reports show authentication problems and who is sending with your domain, sold as an add-on from $14 a month per domain.
Plans
Amazon SES
À la carte$0
No plan or minimum fee: $0.10 per 1,000 emails sent or received, plus $0.12 per GB of attachments; features such as dedicated IPs are bought separately.
Essentials$0
No fixed fee: $0.16 per 1,000 emails up to 10 million a month, then less. Deliverability insights included; new accounts start on it from July 21, 2026.
Pro$105
per month, plus $0.22 per 1,000 emails
Per account and region. Adds managed dedicated IPs, 2,500 address validations a month, deliverability tracking beyond SES and Trend Micro scanning.
Enterprise$500
per month, plus $0.23 per 1,000 emails
Per account and region. Adds global endpoints across two regions, tenants, an open inbound endpoint, 5,000 validations and Spamhaus scanning.
Postmark
Free$0
100 emails a month, never expires; extra emails cannot be bought on this plan.
Basic$15
per month for 10,000 emails
5 sending domains, 4 users, 45 days of history, no inbound email. Extra emails $1.80 per 1,000; $55 a month at 50,000 emails.
Pro$16.50
per month for 10,000 emails
10 domains, 6 users, inbound email, retention up to 365 days. Extra emails $1.30 per 1,000; $60.50 a month at 50,000 emails.
Platform$18
per month for 10,000 emails
Unlimited domains, servers, streams and users, with inbound email. Extra emails $1.20 per 1,000; $66 a month at 50,000 emails.
High volumeCustom
Custom pricing for large senders, arranged through sales.
Ways to pay less
Amazon SES
No public discounts listed.
Postmark
- Startups
$75 credit for bootstrapped companies
Companies that have launched, are charging for their product and have taken no outside investment can ask support for $75 of account credit.
