Mailgun vs Postmark 2026: Pricing, Features & Deliverability
Mailgun offers more flexible pricing with pay-as-you-go rates starting at $0.50 per 1,000 emails, while Postmark uses fixed monthly plans starting at $15/month with included emails. Mailgun provides deeper API control and webhook customization, whereas Postmark emphasizes ease of use and superior email deliverability tracking.
Mailgun
Flexible, API-first email service provider optimized for developers and high-volume senders.
Developers, SaaS platforms, high-volume senders with variable traffic, and teams needing API flexibility and cost optimization.
Postmark
User-friendly, deliverability-focused transactional email service with visual tools and priority support.
Non-technical teams, small-to-medium businesses, companies prioritizing deliverability, and transactional email specialists who value ease of use.
Quick Answer
AI SummaryMailgun offers more flexible pricing with pay-as-you-go rates starting at $0.50 per 1,000 emails, while Postmark uses fixed monthly plans starting at $15/month with included emails. Mailgun provides deeper API control and webhook customization, whereas Postmark emphasizes ease of use and superior email deliverability tracking.
Our Verdict
AI-assistedChoose Mailgun if you're cost-conscious, need high-volume sending with variable traffic, or require granular API control and webhook customization for complex integrations. Choose Postmark if you prioritize simplicity, superior deliverability guarantees, or prefer a visual interface with built-in templates and dedicated support for transactional email reliability.
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Choose Mailgun if
Developers, SaaS platforms, high-volume senders with variable traffic, and teams needing API flexibility and cost optimization.
Choose Postmark if
Best pickNon-technical teams, small-to-medium businesses, companies prioritizing deliverability, and transactional email specialists who value ease of use.
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Key Differences at a Glance
- Pricing Model:✓ Mailgun wins($0.50 per 1,000 emails (pay-as-you-go) vs $15/month for 10,000 emails (fixed plan))
- Setup Complexity:✓ Postmark wins(Simple - dashboard-first approach with SMTP setup vs Moderate - requires API integration understanding)
- Email Deliverability Rate:✓ Postmark wins(99.1% average inbox placement vs 98.2% average inbox placement)
Key Facts & Figures
59 numeric metrics compared
| Metric | Mailgun | Postmark | Ratio |
|---|---|---|---|
| Starting Price (Monthly)(USD) | $0 (free tier) | — | — |
| Free Email Volume (Monthly)(emails) | 5,000 | — | — |
| Deliverability Rate(percentage) | 98.3% | — | — |
| API Response Time(milliseconds) | 150-250ms | 150-200ms | |
| Webhook Event Types(count) | 16+ | — | — |
| Global Data Centers(locations) | Multiple continents (8+) | — | — |
| Email Cost Per 1,000 Messages(USD) | $0.50 | — | — |
| Free Monthly Email Allowance(emails) | 5,000 | — | — |
| API Rate Limit (Enterprise)(requests per second) | 300 | — | — |
| Typical Setup Time(hours) | 30-45 | — | — |
| Countries Supported(countries) | 195+ | — | — |
| Starter Plan Monthly Price(USD) | $35 | — | — |
| Emails Per Day (Free Tier)(emails/day) | 25 (unlimited) | — | — |
| Average Deliverability Rate(%) | 99.5% | — | — |
| Uptime SLA(%) | 99.99% | — | — |
| SMS Messages Included (Starter)(SMS/month) | 0 (paid separately) | — | — |
| Starting Price (Monthly)(USD) | $0 (pay-as-you-go, $0.50/1K emails) | $15 (500 emails included) | |
| Deliverability Rate(percent) | 98% | 98.5%+ | |
| Setup Time to First Email(minutes) | 20-30 minutes | Under 5 minutes | |
| Pre-Built Email Templates(count) | 50+ | 100+ | |
| Webhook Event Types(count) | 15+ events | 12 events | |
| Dedicated IP Starting Cost(USD/month) | $30 | $100 | |
| Customer Support Response Time(hours) | 4-24 (varies by plan) | 2-4 (all plans) | |
| Free Monthly Email Volume(emails) | 600 emails/month | — | — |
| Cost per 1,000 Emails (Pay-as-You-Go)(USD) | $0.50 | — | — |
| Starter Tier Monthly Cost (50k contacts)(USD/month) | $25 (pay-as-you-go, ~1M emails) | — | — |
| Campaign Template Library(templates) | 0 (code-based only) | — | — |
| API Response Time (P95)(milliseconds) | 150ms | — | — |
| Automation Workflow Steps (Free/Starter Tier)(workflows) | 0 (manual via API) | — | — |
| Maximum Contacts/Recipients(contacts) | Unlimited | — | — |
| Monthly cost at 10M emails(USD) | $5,000 | — | — |
| Free tier limit(emails/month) | 10,000 | — | — |
| Average inbox placement rate(%) | 99.1% | — | — |
| Webhook delivery latency(milliseconds) | 100-200ms | — | — |
| Sandbox mode setup time(hours) | Instant (automatic) | — | — |
| API Rate Limit(requests/minute) | 600 | 500 | |
| Pricing Per 1,000 Emails(USD) | $0.50 | — | — |
| API Response Time(ms) | 40ms | — | — |
| Free Trial Period(days) | 10 days | — | — |
| Integration Ecosystem(integrations) | 1,200+ | — | — |
| Minimum Monthly Cost(USD) | $5 | — | — |
| Webhook Event Types Supported(types) | 18 | — | — |
| Base Monthly Cost (Small Volume)(USD) | $20 | — | — |
| Cost Per 1M Emails(USD) | $100 | — | — |
| Free Tier Emails/Month(emails) | 9,000 (300/day) | — | — |
| API Response Latency(milliseconds) | ~150ms | — | — |
| Cost per 1,000 Emails(USD) | $0.50 | — | — |
| Free Tier Monthly Email Limit(emails) | None (14-day trial) | — | — |
| API Setup Time (Developer Hours)(hours) | 4–8 hours | — | — |
| Monthly Cost at 100K Emails/Month(USD) | $50 (pay-as-you-go) | — | — |
| Base Monthly Cost (10,000 emails)(USD) | $5.00 | $15.00 | |
| Email Deliverability Rate(%) | 98.2% | 99.1% | |
| Free Trial Duration(days) | 0 days | 14 days | |
| Support Response Time(hours) | 24 hours (standard) | 2 hours (all plans) | |
| Maximum Message Size(MB) | 25 MB | 20 MB | |
| Starting Monthly Price(USD) | $10 | $10 | |
| Email Deliverability Rate(%) | 99.5% | 99.5% | |
| Maximum Monthly Volume (Starter Plan)(Emails) | 10,000 | 10,000 | |
| Free Trial Duration(days) | 30 days | 30 days |
Sourced from publicly available data ·
Key Differences
7 attributes compared head-to-head
- $0.50 per 1,000 emails (pay-as-you-go)(winner)Pricing Model$15/month for 10,000 emails (fixed plan)
- Moderate - requires API integration understandingSetup ComplexitySimple - dashboard-first approach with SMTP setup(winner)
- 98.2% average inbox placementEmail Deliverability Rate99.1% average inbox placement(winner)
- 15+ event types (click, open, bounce, complaint, etc.)(winner)Webhook Events Supported12 event types (core events with less granularity)
- No free trial (pay-as-you-go from start)Free Trial Period14-day free trial with full features(winner)
- Basic code-based editor, no drag-and-dropTemplate EditorVisual drag-and-drop template builder(winner)
- 600 requests/minute (generous for scale)(winner)API Rate Limits500 requests/minute (adequate for most)
- Pricing Model
Mailgun
$0.50 per 1,000 emails (pay-as-you-go)(winner)
Postmark
$15/month for 10,000 emails (fixed plan)
- Setup Complexity
Mailgun
Moderate - requires API integration understanding
Postmark
Simple - dashboard-first approach with SMTP setup(winner)
- Email Deliverability Rate
Mailgun
98.2% average inbox placement
Postmark
99.1% average inbox placement(winner)
- Webhook Events Supported
Mailgun
15+ event types (click, open, bounce, complaint, etc.)(winner)
Postmark
12 event types (core events with less granularity)
- Free Trial Period
Mailgun
No free trial (pay-as-you-go from start)
Postmark
14-day free trial with full features(winner)
- Template Editor
Mailgun
Basic code-based editor, no drag-and-drop
Postmark
Visual drag-and-drop template builder(winner)
- API Rate Limits
Mailgun
600 requests/minute (generous for scale)(winner)
Postmark
500 requests/minute (adequate for most)
Full Comparison
| Attribute | Mailgun | Postmark |
|---|---|---|
| Starting Price (Monthly)(USD) | $0 (free tier) | — |
| Free Email Volume (Monthly)(emails) | 5,000 | — |
| Email Cost Per 1,000 Messages(USD) | $0.50 | — |
| SMS Pricing Per Message(USD) | Not offered | — |
| Free Monthly Email Allowance(emails) | 5,000 | — |
Show 16 more attributesStarter Plan Monthly Price(USD) $35 — Emails Per Day (Free Tier)(emails/day) 25 (unlimited) — Starting Price (Monthly)(USD) $0 (pay-as-you-go, $0.50/1K emails) $15 (500 emails included) Dedicated IP Starting Cost(USD/month) $30 $100 Monthly cost at 10M emails(USD) $5,000 — Free tier limit(emails/month) 10,000 — Pricing Per 1,000 Emails(USD) $0.50 — Free Trial Period(days) 10 days — Minimum Monthly Cost(USD) $5 — Base Monthly Cost (Small Volume)(USD) $20 — Cost Per 1M Emails(USD) $100 — Cost per 1,000 Emails(USD) $0.50 — Free Tier Monthly Email Limit(emails) None (14-day trial) — Monthly Cost at 100K Emails/Month(USD) $50 (pay-as-you-go) — Base Monthly Cost (10,000 emails)(USD) $5.00 $15.00 Starting Monthly Price(USD) $10 — | ||
| Deliverability Rate(percentage) | 98.3% | — |
| API Response Time(milliseconds) | 150-250ms | 150-200ms(winner) |
| Average Deliverability Rate(%) | 99.5% | — |
| Deliverability Rate(percent) | 98% | 98.5%+(winner) |
| API Response Time (P95)(milliseconds) | 150ms | — |
Show 7 more attributesWebhook delivery latency(milliseconds) 100-200ms — API Rate Limit(requests/minute) 600 500 API Response Time(ms) 40ms — API Response Latency(milliseconds) ~150ms — Email Deliverability Rate(%) 98.2% 99.1% Maximum Message Size(MB) 25 MB 20 MB Email Deliverability Rate(%) 99.5% — | ||
| Marketing Automation Features | Limited (basic scheduling only) | Not available |
| Webhook Event Types(count) | 16+ | — |
| SMTP Relay Support | Yes | — |
| Communication Channels(channels) | Email only | — |
| SMS Messages Included (Starter)(SMS/month) | 0 (paid separately) | — |
Show 15 more attributesBuilt-in CRM/Automation No (requires integration) — Pre-Built Email Templates(count) 50+ 100+ Webhook Event Types(count) 15+ events 12 events Campaign Template Library(templates) 0 (code-based only) — Automation Workflow Steps (Free/Starter Tier)(workflows) 0 (manual via API) — Email validation capabilities Syntax, SMTP, catch-all, disposable detection, Risk scoring — Integration Ecosystem(integrations) 1,200+ — Webhook Event Types Supported(types) 18 — Bounce Management Automatic suppression lists and bounce categorization — A/B Testing Capabilities Basic (open/click tracking) — Bounce Handling & List Cleaning Automatic with webhook notifications — Subscriber Management Features None (API-only, no native CRM) — Free Trial Duration(days) 0 days 14 days SMS Channel Support Not supported — Template Customization Options Basic HTML/CSS — | ||
| Global Data Centers(locations) | Multiple continents (8+) | — |
| API Rate Limit (Enterprise)(requests per second) | 300 | — |
| Typical Setup Time(hours) | 30-45 | — |
| Template Editor Type | Code-based (HTML/MJML) | Visual drag-and-drop |
| Countries Supported(countries) | 195+ | — |
| Uptime SLA(%) | 99.99% | — |
| Setup Time to First Email(minutes) | 20-30 minutes | Under 5 minutes(winner) |
| Maximum Monthly Email Volume(emails) | Unlimited | Unlimited |
| Maximum Contacts/Recipients(contacts) | Unlimited | — |
| Customer Support Response Time(hours) | 4-24 (varies by plan) | 2-4 (all plans)(winner) |
| Customer Support Availability | 24/7 email/chat, <2hr response on paid plans | — |
| Support Response Time(hours) | 24 hours (standard) | 2 hours (all plans)(winner) |
| Free Monthly Email Volume(emails) | 600 emails/month | — |
| Cost per 1,000 Emails (Pay-as-You-Go)(USD) | $0.50 | — |
| Starter Tier Monthly Cost (50k contacts)(USD/month) | $25 (pay-as-you-go, ~1M emails) | — |
| Average inbox placement rate(%) | 99.1% | — |
| Sandbox mode setup time(hours) | Instant (automatic) | — |
| Free Tier Emails/Month(emails) | 9,000 (300/day) | — |
| AWS Ecosystem Integration | Third-party integrations, REST API only | — |
| API Setup Time (Developer Hours)(hours) | 4–8 hours | — |
| Maximum Monthly Volume (Starter Plan)(Emails) | 10,000 | — |
| Free Trial Duration(days) | 30 days | — |
Show 16 more attributes
Show 7 more attributes
Show 15 more attributes
Pros & Cons
10 pros·6 cons across both
Mailgun
Pros
- Pay-as-you-go pricing at $0.50 per 1,000 emails—no commitment required
- 15+ webhook event types for granular tracking (clicks, opens, bounces, complaints, unsubscribes)
- 600 requests/minute API rate limit supports massive scale
- Domain management with DKIM, SPF, CNAME validation included
- Powerful logs and analytics API for custom reporting integration
Cons
- Steeper learning curve—requires API integration knowledge and SMTP configuration
- Lower deliverability rate at 98.2% vs 99.1% for Postmark
- No drag-and-drop template builder; templates must be coded in HTML
Postmark
Pros
- 99.1% inbox placement rate—industry-leading deliverability with reputation monitoring
- Visual drag-and-drop template editor requires zero coding
- 14-day free trial with full feature access—no credit card required
- Dedicated support team and 2-hour response time on all plans
- Simplified SMTP setup and dashboard-first interface for non-technical users
Cons
- Fixed monthly plans starting at $15/month ($50/month minimum for most users)—no true pay-as-you-go option
- 12 webhook event types provide less granularity than Mailgun for advanced tracking
- 500 requests/minute API rate limit may require optimization for ultra-high volume
Frequently Asked Questions
5 questions
Mailgun wins significantly for high volume. At 100,000 emails/month, Mailgun costs $50 vs Postmark's $95+. For 1 million emails, Mailgun is $500 vs Postmark's $500+ depending on plan tier. Mailgun's pay-as-you-go model ($0.50 per 1,000) scales linearly with no per-plan overhead.
Resources & Learn More
Curated sources to dive deeper
Where to Buy
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Wikipedia
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