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Home/Compare/Mailgun vs Postmark

Mailgun vs Postmark

Research & Verification: TrackRival Research Team·Category: email·Updated: Sep 18, 2026

A comprehensive side-by-side comparison of pricing, tier limits, and recent changelog releases for Mailgun and Postmark.

Quick Verdict: Mailgun vs Postmark in 2026

Both Mailgun and Postmark offer competitive entry plans starting at $15/mo. Choose Mailgun if you need email sending, validation, and deliverability tools, or choose Postmark for reliable transactional email.

Mailgun

Email sending, validation, and deliverability tools.

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Category
email
Plans tracked
5
Entry price
$15/mo
Free plan?
Yes
See full Mailgun pricing & changelog →

Postmark

Reliable transactional email.

Visit →
Category
email
Plans tracked
4
Entry price
$15/mo
Free plan?
Yes
See full Postmark pricing & changelog →

How do Mailgun and Postmark pricing plans compare in 2026?

Verified Source Data: Pricing tiers and features are synchronized directly from official vendor endpoints (Mailgun Pricing and Postmark Pricing) and diff-checked daily by TrackRival telemetry.

Mailgun

Free

Mailgun

Free
  • 100 emails per day
  • Ticket support
  • RESTful email APIs and SMTP relay
  • 1 custom sending domain
  • Tracking, analytics, and webhooks
  • + 1 more

Basic

Mailgun

$15/mo
  • 10,000 emails/mo included
  • No daily email limit
  • Monthly email overage options
  • RESTful email APIs and SMTP relay
  • 1 custom sending domain
  • + 1 more

Foundation

Mailgun

$35/mo
  • 50,000 emails/mo included
  • 1,000 custom sending domains
  • Email template builder and API
  • 5 days log retention
  • 1 day message retention
  • + 1 more

Scale

Mailgun

$90/mo
  • 100,000 emails/mo included
  • SAML SSO
  • 5,000 email validations
  • Dedicated IP pools
  • Send time optimization
  • + 1 more

Enterprise services

Mailgun

Custom
  • Includes everything in the Scale plan
  • Custom features
  • Deliverability Services
  • Rapid Fire Burst Sending SLA

Postmark

Free

Postmark

Free
  • Test your integration with 100 emails/month
  • No overages allowed in this plan
  • Perfect for testing your integration
  • Side projects with low volume

Basic

Postmark

$15/mo
  • For solo developers and smaller teams
  • Extra emails @ $1.80 / 1,000
  • Industry-leading deliverability rates & speed
  • 45-day data retention
  • 5 Custom sending domains
  • + 1 more

Pro

Postmark

$16.5/mo
  • For start-ups and small businesses
  • Extra emails @ $1.30 / 1,000
  • Industry-leading deliverability rates & speed
  • Customizable data retention up to 365 days
  • 10 Custom sending domains
  • + 1 more

Platform

Postmark

$18/mo
  • For agencies and larger teams
  • Extra emails @ $1.20 / 1,000
  • Industry-leading deliverability rates & speed
  • Unlimited Custom sending domains
  • Unlimited servers and users
  • + 1 more

Mailgun vs Postmark FAQ

Which is cheaper: Mailgun or Postmark?
Mailgun and Postmark both start at $15/mo, so base entry pricing is tied in the latest snapshot. Check feature limits and usage overages above to determine total cost of ownership.
Does Mailgun or Postmark have a free tier?
Both Mailgun and Postmark offer permanent free tiers in the latest snapshot. Compare the monthly quotas and team member caps in the comparison table above.
Which is better: Mailgun vs Postmark?
Choosing between Mailgun and Postmark depends on your team's architecture and workload. Mailgun excels for teams needing streamlined workflows, while Postmark offers specialized depth in email. Review the side-by-side feature matrix and recent release cadence above to make an informed choice.
How do Mailgun and Postmark compare for developer and enterprise features?
Mailgun and Postmark handle enterprise scale differently: compare whether each provider includes SAML SSO, role-based access control (RBAC), SOC 2 compliance, and dedicated support SLAs in their standard tiers or reserves them for custom enterprise quotes.
Do Mailgun and Postmark support AI agent or MCP integrations?
Both tools support modern API integrations and webhooks. Furthermore, TrackRival provides official Model Context Protocol (MCP) telemetry for Mailgun and Postmark, allowing AI coding assistants like Claude Desktop and Cursor to query their live pricing and changelogs directly.
How often is this Mailgun vs Postmark comparison updated?
TrackRival refreshes pricing telemetry daily from verified official sources and appends changelog entries as soon as either Mailgun or Postmark publishes an update.

Which is more cost-effective: Mailgun or Postmark?

Both Mailgun and Postmark compete in the email space.

  • Choose Mailgun if you value: email sending, validation, and deliverability tools.
  • Choose Postmark if you value: reliable transactional email.
  • Subscribe to TrackRival if you want to be notified whenever either of them changes pricing or ships a major update — so you can react before your competitors do.

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