Postmark vs Mailgun Pricing (2026)

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.

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 →