Postmark vs Mailgun Pricing (2026)
Compare / Postmark vs Mailgun
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Team size
25 seats

Postmark vs Mailgun

Email API & Delivery pricing comparison · 2026

Postmark pricing ranges from $0–$18/month, while Mailgun ranges from $0–$90/month. These products use different pricing models (Per-seat subscription vs Usage-based (pay per token/image/minute)), so a direct price comparison isn't meaningful — costs depend on usage volume and mix.

Visit
See pricing on each vendor's site
Above-the-fold path — each link opens the vendor's pricing page in a new tab.
Visit Postmark pricing
Free plan limits → Discount programs →
Visit Mailgun pricing
Free plan limits → Discount programs →
Compare
2 products · Email API & Delivery
Side-by-side · live
Postmark
Postmark pricing starts at $0/month on the Free plan for testing and low-volume sending, w
verified 13d ago
$249 $37K
View pricing →
Mailgun
Mailgun pricing starts at $0/month on the Free plan (100 emails/day), with paid plans begi
verified 8w ago
$249 $37K
View pricing →
Verdict · Vendr median · year 1
Postmark saves $37K vs Mailgun · 25 seats
Cheapest $249
Spread 99%
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Pro
$5.0K/yr
year 1 license · $17/seat
Usage-based
Custom rates
see vendor pricing for volume tiers
What buyers actually pay
median, annual
Vendr deal-flow data. The real benchmark, not list price.
↓ Lowest median
Median annual
$249/yr
Vendr · n=31
Median annual
$37K/yr
Vendr · n=115 avg 7% negotiated
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 23 sourced facts
18 hidden-cost · 2 contract · Vendr median · 2 review platforms
Last verified 1w ago
Confidence Medium confidence
Sources 18 sourced facts
13 hidden-cost · 1 contract · Vendr median · 3 review platforms
Last verified 1mo 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 · 03

Hidden costs

Each cost is severity-ranked, with the dollar range quoted from its source (Vendr, Reddit, TrustRadius, BBB, official docs) — never our estimate.

Beyond the sticker
Severity-ranked, sourced
5 documented
  • Credits expire monthly
    5-10% of license costs
    1 source
  • Account Approval Delays
    5-10% of license costs
    3 sources
  • Account Suspension Risk
    5-15% of license costs
    3 sources
  • No refunds for debugging failed emails
    $50-$200
    1 source
  • Strict spam complaint thresholds
    10-20% of license costs
    1 source
5 documented
  • Dedicated IP Address
    $59 per month per IP
    1 source
  • Email Validations
    $1.20 per 100 validations
    1 source
  • Overage Charges
    40-60%
    1 source
  • Optimize Suite Add-on
    $49/month
    1 source
  • Limited Log Retention
    1 source
REF · 04

Contract terms

The fine print, surfaced. Green = buyer-friendly. Each clause backed by a quoted source.

Postmark
Mailgun
Auto-renewal
—
Yes
Cancellation
—
—
Commitment
—
—
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
—
Based on 3 verified sources (Vendr · TrustRadius · BBB)
REF · 05

What users say

Aggregated, with sample sizes. We use whichever review platform has data.

User reviews
TrustRadius · Trustpilot · G2
TrustRadius
9.5out of 5 (6)
Trustpilot
1.3out of 5 (23)
Best for
Testing and side projects
Watch out
Account suspension without warning, breaking transactional email for paying customers
TrustRadius
9.2out of 5 (67)
Trustpilot
1.5out of 5 (24)
G2
4.2out of 5 (320)
Best for
Testing and development
Watch out
Slow or unresponsive support (24-48+ hour response times for critical production issues)
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
Visit Postmark pricing
Free plan limits → Discount programs →
Visit Mailgun pricing
Free plan limits → Discount programs →
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.
Email API & Delivery

Postmark

$0–$18
/month
4 plans · Free tier
Full pricing breakdown →
VS
Email API & Delivery

Mailgun

$0–$90
/month
5 plans · Free tier
Full pricing breakdown →
⚖

Different Pricing Models

Direct price comparison isn't meaningful here — Postmark uses Per-seat subscription pricing while Mailgun uses Usage-based (pay per token/image/minute) pricing. Your actual cost will depend on usage volume, team size, or both. Here's each product in its native unit.

Per-seat subscription

Postmark

$0–$18 / month
See full Postmark pricing →
vs
Usage-based (pay per token/image/minute)

Mailgun

$0–$90 / month
See full Mailgun pricing →

Postmark and Mailgun both operate in the email api & delivery category. This page compares their list pricing.

Plan-by-Plan Pricing

Plan Postmark Mailgun
Free Free /month Free /month
Basic $15 /month $15 /month
Pro $16.50 /month $35 /month
Platform $18 /month $90 /month
Enterprise — Custom

Cost at Scale

Total cost of ownership — licenses, implementation, and hidden costs included.

Postmark

4 scenarios
$0/month (100 emails)
Developer Testing
$15/month
Small SaaS
$85/month
Growing App
See all 4 scenarios →

Mailgun

3 scenarios
$420/year
Small Business (Foundation plan)
$1,080/year
Growing Team (Scale plan)
$37,188/year
Enterprise Buyer (Vendr median)

Market Intelligence

Postmark

Median annual cost
$249
Based on
31 deals

Mailgun

Median annual cost
$37,188
Average negotiated discount
7%
Based on
115 deals

What Users Say

Postmark

Trustpilot
1.3out of 5 (23)
TrustRadius
9.5out of 10 (6)
Top complaints
  • Account suspension without warning, breaking transactional email for paying customers
  • Severe support quality decline since ActiveCampaign acquisition
  • Unexplained account rejections during approval process

Mailgun

G2
4.2out of 5 (320)
Trustpilot
1.5out of 5 (24)
TrustRadius
9.2out of 10 (67)
Top complaints
  • Slow or unresponsive support (24-48+ hour response times for critical production issues)
  • Account suspended or permanently disabled without explanation
  • Shared IP deliverability problems affecting Yahoo, AOL, Hotmail, and Outlook

Hidden Costs

Beyond the sticker price — what catches buyers off guard.

Postmark 9 hidden costs

low
Credits expire monthly 5-10% of license costs
high
Account Approval Delays 5-10% of license costs
critical
Account Suspension Risk 5-15% of license costs
medium
No refunds for debugging failed emails $50-$200
high
Strict spam complaint thresholds 10-20% of license costs
See all Postmark hidden costs →

Mailgun 9 hidden costs

medium
Dedicated IP Address $59 per month per IP
medium
Email Validations $1.20 per 100 validations
high
Overage Charges 40-60%
low
Optimize Suite Add-on $49/month
low
Limited Log Retention
See all Mailgun hidden costs →

Contract Terms

Term Postmark Mailgun
Auto-renewal — Yes
Cancellation — —
Minimum commitment — —
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 —

Continue researching

Postmark

Mailgun

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