Postmark
Transactional Email · postmarkapp.com
Postmark is a transactional email delivery service offering a REST email API, SMTP service, message streams, templates, inbound email processing, and delivery analytics.
Switching to Mailgun, which covers 78% of the compared capabilities.
Find my alternative
Way less money.
Top Postmark alternatives
We compared 7 products and found 7 cheaper alternatives · vs Postmark Basic at $15/mo · scenario: 1,000 emails/month, 1 seat, monthly billing, USD.
Postmark costs $15/mo on the Basic plan at 1,000 emails/month, 1 seat, monthly billing. We found 7 assessed alternatives that are cheaper in this scenario; 1 of them covers at least 75% of the 9 compared capabilities.
| Product | Match | Price | Annual savings | |
|---|---|---|---|---|
TOP PICK MailerSend Hobby plan · missing: Analytics API, Event tracking, Webhooks | 67% | $7/mo how? ⓘ | $96 / year 53% cheaper | |
SMTP2GO Starter plan · missing: Analytics API, Event tracking, Inbound email parsing | 67% | $10/mo how? ⓘ | $60 / year 33% cheaper |
Which Postmark alternative for which situation
Picked by the numbers in this scenario — same subtype unless stated, assessed products only.
- Best free plan
- Mailgun — $0/mo (Free plan) · covers 78%
- Need transactional email API, email templates, dedicated IP, custom sending/tracking domain, analytics API, event tracking or inbound email parsing?
- Mailgun — from $0/mo (Free plan)
- Need webhooks?
- Resend — from $0/mo (Free plan)
- Need SMTP & REST API?
- MailerSend — from $0/mo (Free plan)
What you give up
Capabilities Postmark has that the top alternatives lack.
- Analytics API — Pull analytics data programmatically via an API.Missing from MailerSend, Resend, SMTP2GO.
- Event tracking — Track specific user actions like clicks or sign-ups.Missing from MailerSend, Resend, SMTP2GO.
- Webhooks — Send form submissions to other tools automatically as they arrive.Missing from Mailgun, MailerSend.
- Inbound email parsing — Parse incoming email into your application.Missing from SMTP2GO.
- SMTP & REST API — Send transactional email via SMTP or a REST API.Missing from Mailgun, Resend.
Feature comparison
Postmark vs the top alternatives, on the 9 compared capabilities.
| Capability | Postmark | Mailgun | MailerSend | Resend | SMTP2GO |
|---|---|---|---|---|---|
| Transactional email API from Free | ✓ | ✓ | ✓ | ✓ | ✓ |
| Email templates from Free | ✓ | ✓ | ✓ | ✓ | ✓ |
| Dedicated IP from Pro | ✓ | ✓ | ✓ | ✓ | ✓ |
| Custom sending/tracking domain from Free | ✓ | ✓ | ✓ | ✓ | ✓ |
| Analytics API from Free | ✓ | ✓ | ✗ | ✗ | ✗ |
| Event tracking from Free | ✓ | ✓ | ✗ | ✗ | ✗ |
| Webhooks from Free | ✓ | ✗ | ✗ | ✓ | ✓ |
| Inbound email parsing | ✓ | ✓ | ✓ | ✓ | ✗ |
| SMTP & REST API | ✓ | ✗ | ✓ | ✗ | ✓ |
| Scenario price cheapest qualifying plan | $15/mo Basic | $0/mo Free | $0/mo Free | $0/mo Free | $0/mo Free |
✓ means the product offers the capability — possibly only on a higher tier than the plan priced below it. The price row shows the cheapest plan that qualifies for our comparison scenario, with its plan name; a $0 free plan may not include every checked capability.
What Postmark covers
The capability set used for comparison. Grey entries are not available on self-serve plans.
- ✓ Transactional email API — from Free
- ✓ Email templates — from Free
- ✓ Dedicated IP — from Pro
- ✓ Custom sending/tracking domain — from Free
- ✓ Analytics API — from Free
- ✓ Event tracking — from Free
- ✓ Webhooks — from Free
- ✓ Inbound email parsing
- ✓ SMTP & REST API
- ✗ SSO (SAML)
Price ladder
Observed prices from the official pricing page.
Sources
Every claim traces to an official source and a check date.
- https://postmarkapp.com/pricing (official_pricing, checked 2026-09-07)
- https://postmarkapp.com/pricing# (official_pricing, checked 2026-09-07)
Frequently asked
How much does Postmark cost?
Postmark's Basic plan costs $15/mo in our scenario (1,000 emails/month, 1 seat, monthly billing). A free plan exists.
Is there a free Postmark alternative?
Yes. Mailgun has a free plan that covers 78% of the 9 capabilities we compared against Postmark.
What is the cheapest Postmark alternative?
In our scenario (1,000 emails/month, 1 seat, monthly billing), Mailgun is the cheapest assessed alternative at $0/mo (Free plan).
What is the cheapest Postmark alternative with Analytics API?
Mailgun covers Analytics API and costs $0/mo (Free plan) in our scenario.
Does Postmark have a free plan?
Yes. Postmark's free plan is limited to 100 responses/month, 6 seats.
When were these prices checked?
Between 2026-08-31 and 2026-09-07, on the vendors' official pricing pages.