Postmark vs Amazon SES

Postmark8.8Visit Amazon SES8.3Visit

Higher score Postmark #5 in Email APIs 8.8/10 Free plan Free plan✓ 5 of 5 features Visit Postmark

vs

Amazon SES #8 in Email APIs 8.3/10 Paid ✓ 5 of 5 features Visit Amazon SES

• Postmark fits best

  Transactional email teams prioritizing deliverability

• Amazon SES fits best

  AWS users sending high-volume email cheaply

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	Postmark 8.8/10 Visit ↗	Amazon SES 8.3/10 Visit ↗
At a glance
Editor score	8.8	8.3
Ranking	#5 in Email APIs	#8 in Email APIs
Best for	Transactional email teams prioritizing deliverability	AWS users sending high-volume email cheaply
Pricing model	Free plan + paid	Paid
Starting price	$15/mo	$0.10/unit usage-based
Free plan	✓ (best)	—
Free trial	—	—
Deployment	Cloud	Cloud
Platforms	Web	Web
Integrations	12 integrations	7 integrations
Features Postmark 5/5 · Amazon SES 5/5
Inbound email	✓	✓
Delivery event webhooks	✓	✓
SMTP relay	✓	✓
Email templates	✓	✓
Dedicated IP option	✓	✓
Specs
Monthly send limit	10000 /mo	Not checked yet
Our review
Pros	REST API, SMTP sending, and separate transactional and broadcast streams Delivery, bounce, open, click, and spam complaint webhooks Inbound email parsing, templates, analytics, and official libraries	Usage-based outbound pricing starts at $0.10 per 1,000 emails Supports inbound receiving, SMTP, templates, and email event publishing Integrates with SNS, S3, Lambda, CloudWatch, and AWS SDKs
Cons	Free plan allows only 100 emails per month Basic and Pro plans limit monthly volume to 10,000 emails Broadcast and transactional workflows require stream management	No permanent free plan Some features and pricing depend on the selected monthly plan Inbound receiving is region-dependent
Our verdict	Postmark is an email delivery service for application teams sending transactional and broadcast messages through REST APIs or SMTP. It supports individual and batch messages, separate message streams, reusable HTML and plain-text… Read the review →	Amazon SES is a cloud email service for applications that need to send transactional messages, marketing email, newsletters, or other application-generated mail. Developers can send through the SES API, AWS SDKs, SMTP interface, console,… Read the review →

Strengths and trade-offs

• Postmark — where it wins

  • REST API, SMTP sending, and separate transactional and broadcast streams
  • Delivery, bounce, open, click, and spam complaint webhooks
  • Inbound email parsing, templates, analytics, and official libraries

  Where it doesn't

  • Free plan allows only 100 emails per month
  • Basic and Pro plans limit monthly volume to 10,000 emails
  • Broadcast and transactional workflows require stream management

• Amazon SES — where it wins

  • Usage-based outbound pricing starts at $0.10 per 1,000 emails
  • Supports inbound receiving, SMTP, templates, and email event publishing
  • Integrates with SNS, S3, Lambda, CloudWatch, and AWS SDKs

  Where it doesn't

  • No permanent free plan
  • Some features and pricing depend on the selected monthly plan
  • Inbound receiving is region-dependent

• Postmark8.8/10 · Free plan

  A focused email API for transactional delivery, tracking, templates, and inbound processing.

  Visit PostmarkFull verdict →
• Amazon SES8.3/10 · Paid

  A low-cost AWS email API for high-volume transactional and marketing sending.

  Visit Amazon SESFull verdict →