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 for the Free plan.
verified 27d ago
$249 $780
View pricing →
Mailgun
Mailgun is a developer-focused transactional email API built for sending, receiving, and t
verified 27d ago
$249 $780
View pricing →
Verdict · Vendr median · year 1
Postmark saves $531 vs Mailgun · 25 seats
Cheapest $249
Spread 68%
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
$780/yr
Vendr · n=8 · limited data
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 12 sourced facts
7 hidden-cost · 2 contract · Vendr median · 2 review platforms
Last verified 3w ago
Confidence Medium confidence
Sources 1 sourced fact
Vendr median
Last verified 3w 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
    $500-$2,000
    2 sources
  • Account suspension risk affecting all email
    $1,000-$10,000
    2 sources
  • No refunds for debugging failed emails
    $50-$200
    1 source
  • Strict spam complaint thresholds
    10-20% of license costs
    1 source
3 documented
  • Pay-as-you-go overage charges above plan volume
    $20-$500/month depending on volume spikes
  • Email validation charged separately
    $12-$120 per 1,000-10,000 validations
  • Dedicated IPs cost extra on lower plans
    $5-$25/month for reputation-sensitive senders
REF · 05

What users say

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

User reviews
TrustRadius · Trustpilot · G2
TrustRadius
9.5/5 (6)
Trustpilot
2.1/5 (24)
Best for
Testing and side projects
Watch out
Account suspensions without warning affecting transactional emails
No public ratings yet
Best for
Testing and development
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

Market Intelligence

Postmark

Median annual cost
$249
Based on
31 deals

Mailgun

Median annual cost
$780
Based on
8 deals

Hidden Costs

Beyond the sticker price — what catches buyers off guard.

Postmark 5 hidden costs

low
Credits expire monthly 5-10% of license costs
high
Account approval delays $500-$2,000
critical
Account suspension risk affecting all email $1,000-$10,000
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 3 hidden costs

medium
Pay-as-you-go overage charges above plan volume $20-$500/month depending on volume spikes
low
Email validation charged separately $12-$120 per 1,000-10,000 validations
low
Dedicated IPs cost extra on lower plans $5-$25/month for reputation-sensitive senders
See all Mailgun hidden costs →

Continue researching

Postmark

Mailgun

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