Mailgun vs Postmark
No clear leader: Postmark (63.1) and Mailgun (59.1) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.
Capabilities
Feature-by-feature on the axes that matter for communication apis. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Mailgun
A developer-focused platform that handles sending transactional emails reliably, with integrated tools for validating email lists, testing inbox placement, monitoring sender reputation, and tracking email performance.
Postmark
A transactional email platform that sends emails through API and SMTP endpoints, with built-in capabilities for tracking delivery success, handling bounces, and processing inbound messages. Designed for developers who need to integrate email delivery into applications.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Mailgun
From $49/mo. First month free.
- Pilot$49/mo (first month free), unlimited users
- First month free
- Unlimited users
- 2,500 email address validations
- 25 inbox placement tests
- Detailed documentation
- +1 more
- Starter$99/mo (first month free), unlimited users
- First month free
- Unlimited users
- 5,000 email address validations
- 50 inbox placement tests
- Spam trap monitoring (1 domain)
- +6 more
- ContractContact sales
- Unlimited users
- Custom domain and IP monitoring
- Custom email validations
- Custom inbox placement tests
- Designated Technical Account Manager
Postmark
From $15/mo. Free tier with 100 emails/month. Pay-as-you-go overages starting at $1.80 per 1,000 emails.
- FreeFree
- 100 emails/month
- REST API
- SMTP
- Transactional email
- Sandbox Mode
- +3 more
- Basic$15/mo + $1.80 per 1,000 overage emails
- 10,000+ emails/month
- Industry-leading deliverability
- 45-day retention
- 5 custom domains
- Unlimited emails/day
- +3 more
- Pro$16.50/mo + $1.30 per 1,000 overage emails
- 10,000+ emails/month
- Industry-leading deliverability
- Customizable retention up to 365 days
- 10 custom domains
- Unlimited emails/day
- +5 more
- Platform$18/mo + $1.20 per 1,000 overage emails
- 10,000+ emails/month
- Industry-leading deliverability
- Customizable retention up to 365 days
- Unlimited custom domains
- Unlimited emails/day
- +5 more
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
Mailgun
- Google Postmaster Tools
- Microsoft SNDS
Postmark
- Mailcoach
- Datadog
- Craft CMS
- Customer.io
- ActiveCampaign
- Supabase
- Bubble
- Figma
- Google Sheets
- Gravity Forms
- Gravity SMTP for WordPress
- Netlify
- Slack
- Stripe
- Stripo
- Typeform
- WordPress
- WP Mail SMTP
- Zapier
- Tabular
- SureTriggers
- Marka Email Generator
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.