Mailgun vs Postmark
Side-by-side plans, pricing, and feature gates for Mailgun and Postmark, verified . Both are primarily transactional email tools.
Plans side by side
Every published plan from each vendor, with the headline monthly anchor price. Some prices scale with subscriber count or seats; full detail lives on each tool's page.
Mailgun
- Free
Hobby tier capped at 100 emails per day
Free - Basic
Entry paid tier with 10,000 emails/month included
$15/mo - Foundation
50,000 emails/month with template builder and full inbound routing
$35/mo - Scale
100,000 emails/month with SAML SSO, dedicated IP, and live support
$90/mo - Enterprise
Custom contracting for high-volume senders
Custom
Postmark
- Free
100 emails per month, no credit card required
Free - Basic
Entry paid tier with 10,000 emails/month and 5 custom domains
$15/mo - Pro
10,000 emails/month with inbound processing and customizable retention
$16.50/mo - Platform
Unlimited domains and users with the lowest overage rate
$18/mo - High-Volume
Custom pricing for volumes above standard tiers
Custom
Limits at the entry paid tier
Compares Basic (Mailgun) against Basic (Postmark). Both are the lowest-priced non-free, non-custom plan on each side.
| Limit | Mailgun | Postmark |
|---|---|---|
| Emails / month | 10,000 | 10,000 |
When Mailgun wins
- Developers integrating receipts, notifications, and password-reset emails
- Teams already on a marketing ESP that need a separate transactional channel
- High-volume B2B applications with strict deliverability requirements
Where Mailgun is the wrong fit
- Marketing teams seeking campaign tooling (use Mailchimp or Kit)
- Creators sending newsletters (use Kit or beehiiv)
- Free-tier hobbyists with low total volume but spiky daily-cap-bumping use cases
When Postmark wins
- SaaS apps prioritizing receipt and notification deliverability
- Teams that need detailed inbound email parsing alongside outbound sends
- Companies that need 365-day data retention for compliance
Where Postmark is the wrong fit
- Hobby projects with bursty traffic (Mailgun's 100/day or Resend's 3,000/month are friendlier than the 100/month Free cap)
- Marketing teams (use Mailchimp or Kit)
- Buyers who want a single vendor for marketing and transactional email
Common questions
- Is Mailgun cheaper than Postmark?
- Both Mailgun and Postmark have free or custom entry pricing, so a direct entry-tier price comparison is not meaningful.
- Does Mailgun or Postmark have a free plan?
- Both have free plans. Mailgun: Hobby tier capped at 100 emails per day. Postmark: 100 emails per month, no credit card required.
Mailgun: https://www.mailgun.com/pricing/ · Postmark: https://postmarkapp.com/pricing
Last verified . Pricing changes between refreshes; confirm at the vendor before purchasing.