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Flexible email API for developers
MailerSend’s powerful RESTful API is built with you in mind. Start integrating email sending quickly with our official libraries and authenticate API requests with tokens.
Integrate quickly with our API documentation
MailerSend fits right into your stack with libraries for your favorite programming languages, including officially maintained PHP, Node.js, Golang, Python and Laravel libraries.
Send emails from your apps
Start sending emails using our email API in a few minutes with our detailed API documentation and use its features like advanced personalization, attachments and more.
Easy authentication with tokens
Use tokens to manage email sendings for your account. Create as many as you need for your use cases and projects, view their status codes, and then pause or delete them at any time.
Customizable token permissions
For extra security, set permissions to limit the areas of your account that API tokens can access. Grant full access to endpoints for all parts of your accounts or use custom access to choose specific areas.
Safeguard your sending domain
Protect your sender reputation using our SPF, DKIM and DMARC security protocols. Authenticate your email content to improve your email deliverability and keep out of the spam folder.
Proven experience that delivers
MailerSend is backed by a decade of email delivery experience, so you can send transactional email messages knowing that they will reach the inbox.
More features to explore
MailerSend is packed full of features that help you save time and grow your business.
Send emails
Email delivery
Enjoy the flexibility of sending a few emails or scaling quickly to send a few million.
Transactional emails
Intuitively-designed tools allow anyone to contribute, while an advanced infrastructure lets you scale fast.
SMTP relay
Use Simple Mail Transfer Protocol when you want to quickly send emails using a reliable Internet standard.
Email API
Start sending and tracking your emails with our easy API integration process and clean documentation.
Dynamic email templates
Build one-to-one customer relationships on a mass scale using a single email template.
Email verification
Verify a single email address or upload an entire email list to verify in bulk.
Control your sendings
Webhooks
Get notified as email events happen so your integration can automatically trigger reactions.
Advanced email tracking
Every email is a learning experience. Monitor your email performance to find what works best.
Manage the unsubscribe page
Whether people are unsubscribing, give them a compelling reason to stay.
Suppression list management
Protect your sending reputation by adding email addresses and domains that you should not send to.
Track the results
Create emails
Custom HTML template builder
Interested in writing your own HTML code? Our HTML email template editor gives you the flexibility to build exactly what you want.
Drag & drop email template builder
Our drag & drop email editor empowers you to create professionally-designed transactional emails.
Rich-text email editor
Create plain text emails with the formatting capabilities of HTML. Add links, images, bullet points and style text with ease.
Control your account
User management
Invite your team members to collaborate on projects by assigning roles and granting permissions.
File manager
Streamline your workflow by organizing and keeping all your files in one place in the cloud.
Multiple domains
Use multiple domains to manage different brands or products with one MailerSend account.
Integrate emails in your stack now
Use our email API to start sending emails within your apps. Get started with 12,000 free emails per month! Includes 24/7 help from a friendly and dedicated support team.