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Transactional email API for developers
MailerSend is a transactional email service and API built for developers and product teams to send reliable transactional email - password resets, receipts, notifications - at scale, with strong deliverability and a developer-friendly API. From the makers of MailerLite, it focuses on the transactional side of email with SMTP, REST API, SDKs, templates, and analytics.
The platform provides a fast API and SMTP relay, a drag-and-drop and HTML template editor, inbound email routing, email verification, webhooks, analytics, and SMS, so product teams can send and track transactional messages programmatically. Its focus on deliverability, clear analytics, and developer experience makes it a common choice for SaaS applications sending system-generated email.
MailerSend offers a Free tier with 500 emails per month (100-email daily cap), a Hobby plan at 7 dollars per month for up to 5,000 emails, a Starter plan at 35 dollars for 50,000 emails, and a Professional plan around 110 dollars with unlimited users and templates, plus Enterprise. Overages bill per 1,000 emails beyond your plan. A December 2025 change moved the previous free Hobby tier to a paid 7 dollar plan and dropped the free tier to 500 emails. Aimed at developers and product teams, it competes with SendGrid, Resend, Mailgun, Postmark, and Mailjet.
Pricing Model
Freemium
Starting Price
$0/mo
Free Options
Free version
| Feature | Free | Hobby Popular | Starter | Professional |
|---|---|---|---|---|
| 500 emails per month | — | — | — | |
| 100 emails per day cap | — | — | — | |
| API and SMTP | — | — | ||
| Templates | — | — | — | |
| Analytics | — | — | — | |
| Up to 5,000 emails | — | — | — | |
| Webhooks | — | — | — | |
| Overage 1.50 dollars per 1,000 | — | — | — | |
| 50,000 emails | — | — | ||
| Overage 0.90 dollars per 1,000 | — | — | — | |
| Inbound routing | — | — | — | |
| Email verification | — | — | — | |
| Unlimited users and templates | — | — | — | |
| Advanced features | — | — | — | |
| Priority support | — | — | — |
Other
Analytics
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API Types
SDK Availability
Verify SDK availability in vendor's documentation.
Developer Features
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Compliance Standards
SOC 2 Type II
EnterpriseISO 27001
EnterpriseGDPR Compliant
GlobalHIPAA
HealthcarePCI DSS
FinanceCCPA
PrivacyFedRAMP
GovernmentCSA STAR
CloudDeployment & Data
Data Residency Options
Verify with vendor for your specific region requirements.
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