GTM Hub
What is Mailgun?
Developer-focused transactional email API service for sending, receiving, tracking, testing, and optimizing emails at scale. Part of Sinch AB since acquisition.
Mailgun news
Sinch Mailgun launches Australian hosting region
New Australian data center launched to keep email data onshore with SOC 2 and ISO 27001 certifications for regulated sectors
Mailgun Inspect integrates with Salesforce AgentExchange
Email testing tool now available as native Lightning Web Component for Salesforce marketing teams, enabling email preview across 100+ clients without leaving Salesforce
Mailgun Inspect API-first solution launched
New email QA and accessibility tool for embedding into martech and enterprise platforms, built with Email on Acid capabilities on Mailgun infrastructure
Key features
Send
Email API and SMTP services for sending, receiving, and tracking messages
Optimize
Tools to enhance email deliverability and engagement metrics
Validate
Email list cleaning via API or bulk upload
Inspect
Email preview and testing capabilities across 100+ email clients and devices before campaigns launch; integrated with Salesforce AgentExchange (as of Sept 2026)
Multiple Regions
Data residency support including US, EU, and Australia (launched Nov 2026)
Mailgun pricing
Free tier available with up to 100 emails/day. Paid plans include volume limits, overage options, and progressive feature access.
| Plan | Price | What's included |
|---|---|---|
| Free | $0/month | 100 emails/day, RESTful APIs, SMTP relay, 1 custom domain, tracking/analytics, 1 API key, 1 inbound route, ticket support |
| Basic | $15/month | 10,000 emails/month, no daily limits, APIs/SMTP, 1 custom domain, tracking, 1 API key, 5 inbound routes, customizable dashboard |
| Foundation | $35/month (first month free) | 50,000 emails/month, 1,000 custom sending domains, email template builder, 5-day log retention, full inbound routing access |
| Scale | $90/month (first month free) | 100,000 emails/month, SAML SSO, 5,000 email validations, dedicated IP pools, send time optimization, 30-day log retention, phone/chat support |
| Enterprise | Custom pricing | High-volume solutions with custom configuration |
Pros & cons
Pros
- + Industry-leading reliability and performance at scale
- + Trusted by 150,000+ businesses including 8 of 10 largest tech companies
- + Comprehensive feature set (send, optimize, validate, inspect all in one platform)
- + Strong compliance certifications (SOC 2, ISO 27001)
- + Global infrastructure with data residency options
- + Developer-focused with RESTful APIs and SMTP support
- + Recent innovations: Salesforce integration for embedded email testing (2026)
- + Free tier for testing and low-volume use
Cons
- − Overage pricing structure: $1.10-$1.80 per 1,000 emails depending on tier
- − Limited domains and API keys on lower-tier plans
- − Log retention limited on foundation plan (5 days vs 30 days on scale)
Who is Mailgun best for?
- • Developers and engineering teams building transactional email systems
- • SaaS applications requiring reliable email delivery
- • High-volume email senders and businesses
- • Organizations with regulatory data residency requirements
- • Enterprises needing email testing integrated with existing workflows
