Custom HTML template builder
Work with your own code using our HTML email template builder. Design responsive email templates that meet your unique requirements while showcasing your brand identity!
Work faster with our email editor
Save time and speed up your workflow with our specialized functionality including syntax highlighting, autocompleting tags and error tagging. Easily embed merge tags to personalize your emails for subscribers at scale.


Perfect your email before sending
Create beautiful email designs that look good in Gmail and Outlook by previewing them in real time. Then send test emails to check how your custom HTML code, CSS and GIFs appear in different email clients.

Update your HTML template safely at any time
Enjoy the freedom of editing your HTML template at any time. Update your HTML code and save the template as a draft version while the previous version of the template is still active and being sent to your recipients. Publish the draft version when you are ready.

Send quickly with pre-built code
It’s easy to send your email campaigns with MailerSend’s API. No need for third-party plugins! Simply copy the sending instructions for your favorite programming language and paste it into your terminal or file.

Manage your templates in one place
Organize your email templates into categories like CRM and e-commerce, then reuse favorites by duplicating them. Set default settings like subject, sender and email address for easy, automatic sending.
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.