Maileroo vs Postmark
Email API & Delivery pricing comparison · 2026
Maileroo has a free plan, then $10–$250/mo, while Postmark has a free plan, then $15–$18/mo. Postmark is typically 77% more affordable, though your actual cost depends on tier and team size.
Maileroo
Maileroo is a transactional email service built for developers, with both an SMTP relay an
verified 3mo ago
$180
$249
Postmark
Postmark pricing starts at $0/month on the Free plan for testing and low-volume sending, w
verified 4mo ago
$180
$249
Annual license estimate
Maileroo
costs
$18
less than
Postmark
· 25 seats where applicable
Cheapest
$180
Spread
9%
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Starter
$180/yr
year 1 license · flat plan price
Pro
$198/yr
year 1 license · flat plan price
What buyers actually pay
median, annual
Vendr deal-flow data. The real benchmark, not list price.
No Vendr data
—
Not in Vendr's deal flow
Median annual
$249/yr
Vendr · n=31
REF · 01
Sources & confidence
Every dollar amount and contract clause below traces back to a sourced fact. We don't manufacture composite scores.
Where this data comes from
Vendr · TrustRadius · Reddit · BBB · official docs
Sources
7 sourced facts
5 hidden-cost · 1 contract · 1 review platform
Last verified
3mo ago
Confidence
Limited confidence
Sources
23 sourced facts
18 hidden-cost · 2 contract · Vendr median · 2 review platforms
Last verified
3mo ago
Confidence
Medium confidence
REF · 02
Plans at a glance
Every tier per product. Lock one to drive the cost row above and reveal a tier-specific outbound CTA.
Tier ladder
Click a tier to lock the cost row to it. Locking surfaces a tier-specific Visit CTA.
REF · 04
Contract terms
The fine print, surfaced. Green = buyer-friendly. Each clause backed by a quoted source.
Maileroo
Postmark
Auto-renewal
—
—
Cancellation
—
—
Commitment
✓
no annual commitment; month-to-month basis
—
Price escalation
—
Users report mid-contract price increases following the ActiveCampaign acquisition, with all legacy pricing customers subject to increases within 90 days of notification.
Can downgrade
—
No
REF · 05
What users say
Aggregated, with sample sizes. We use whichever review platform has data.
User reviews
TrustRadius · Trustpilot · G2
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
Visit Maileroo pricing
Affiliate partner — does not affect ranking.
License cost is computed from publicly listed plans (real math, list price × seats).
Median annual cost is from Vendr's deal flow when available — see source badges.
Hidden costs and contract terms each cite their own sources. We do not invent composite scores.
VS
Plan-by-Plan Pricing
| Plan | Maileroo | Postmark |
|---|---|---|
| Free | Free /month | Free /month |
| Basic | $10 /month | $15 /month |
| Starter | $15 /month | $16.50 /month |
| Premium | $30 /month | $18 /month |
| Growth | $45 /month | — |
| Pro | $72 /month | — |
| Business | $85 /month | — |
| Ultimate | $140 /month | — |
| Scale | $150 /month | — |
| Enterprise | $250 /month | — |
| Custom | Custom | — |
Cost at Scale
Total cost of ownership — licenses, implementation, and hidden costs included.
Maileroo
3 scenarios$0/month
Hobby / Startup (Free Plan)
$45/month
Mid-Size Business (Growth Plan)
$150/month
High-Volume Sender (Scale Plan)
Postmark
3 scenarios$0/month (100 emails)
Developer Testing
$15/month
Small SaaS
$15/month
Low Volume (up to 10,000 emails/month)
on the Basic plan
Contract Terms
| Term | Maileroo | Postmark |
|---|---|---|
| Auto-renewal | — | — |
| Cancellation | — | — |
| Minimum commitment | no annual commitment; month-to-month basis | — |
| Price escalation | — | Users report mid-contract price increases following the ActiveCampaign acquisition, with all legacy pricing customers subject to increases within 90 days of notification. |
| Can downgrade | — | No |