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Head-to-head · SMTP Relay Services

Postmark vs AhaSend

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Postmark #1 in SMTP Relay Services 8.8/10 Free plan Free plan✓ 0 of 3 features Visit Postmark
AhaSend #7 in SMTP Relay Services 7.8/10 Free plan Free plan✓ 3 of 3 features Visit AhaSend

Postmark leads on 0 checks, AhaSend on 1, and 4 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scorePostmark · 8.8/10
  • Free planboth
  • Most featuresAhaSend · 3 of 3

Postmark scores higher on our rubric for smtp relay services: 8.8 against 7.8 out of 10; our editors rank them #1 and #7.

AhaSend leads on monthly send limit: 25000 emails/mo versus 10000 emails/mo.

Postmark is the better fit for transactional teams needing streams and templates. AhaSend is the better fit for teams wanting a complete relay with a free tier.

  • Postmark fits best

    Transactional teams needing streams and templates

  • AhaSend fits best

    Teams wanting a complete relay with a free tier

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Side by side

Feature Postmark 8.8/10 Visit ↗ AhaSend 7.8/10 Visit ↗
At a glance
Editor score 8.8 7.8
Ranking #1 in SMTP Relay Services #7 in SMTP Relay Services
Best for Transactional teams needing streams and templates Teams wanting a complete relay with a free tier
Pricing model Free plan + paid Free plan + paid
Starting price $15/mo —
Free plan ✓ ✓
Free trial — —
Deployment Cloud Cloud
Platforms Web Web
Support Live chat, Docs Email, Tickets, Community, Docs
Compliance GDPR, 2FA GDPR, 2FA
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Postmark 0/3 · AhaSend 3/3
Inbound email parsing Not checked yet ✓ (best)
Event webhooks Not checked yet ✓ (best)
Subaccounts Not checked yet ✓ (best)
Specs
Monthly send limit 10000 emails/mo 25000 emails/mo (best)
Dedicated IP option Not checked yet Dedicated
Email log retention Not checked yet 14 days
Our review
Pros
  • Separate transactional and broadcast message streams
  • Inbound parsing with JSON webhooks and delivery events
  • Reusable templates with previews, variables, and test sends
  • SMTP relay and RESTful email API in one service
  • Inbound parsing, event webhooks, and suppression management
  • Subaccounts, retention controls, and dedicated IP options
Cons
  • Free plan allows only 100 emails per month
  • Listed paid plans include 10,000 emails per month
  • Dedicated IPs are limited to eligible high-volume customers
  • Free plan is limited to 1,000 emails per month
  • Dedicated IP access on Pro starts at 100,000 emails per month
  • Max uses EUR pricing and is aimed at higher-volume sending
Our verdict

Postmark is an email delivery service for application teams sending transactional and broadcast messages through REST APIs or SMTP. It supports application email, individual or batch messages, reusable HTML and plain-text templates,…

Read the review →

AhaSend is a transactional email service for developers and software platforms. It combines SMTP relay, a RESTful email API, inbound email routing and parsing, delivery tracking, event webhooks, suppression handling, domain authentication,…

Read the review →
  1. PostmarkSMTP Relay Services 8.8Free plan
  2. AhaSendSMTP Relay Services 7.8Free plan

Strengths and trade-offs

  • Postmark — where it wins

    • Separate transactional and broadcast message streams
    • Inbound parsing with JSON webhooks and delivery events
    • Reusable templates with previews, variables, and test sends

    Where it doesn't

    • Free plan allows only 100 emails per month
    • Listed paid plans include 10,000 emails per month
    • Dedicated IPs are limited to eligible high-volume customers

  • AhaSend — where it wins

    • SMTP relay and RESTful email API in one service
    • Inbound parsing, event webhooks, and suppression management
    • Subaccounts, retention controls, and dedicated IP options

    Where it doesn't

    • Free plan is limited to 1,000 emails per month
    • Dedicated IP access on Pro starts at 100,000 emails per month
    • Max uses EUR pricing and is aimed at higher-volume sending

More comparisons

All SMTP relay services comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update