Your emails.
Your domain.
Every detail.
Transactional email for the moments that matter. Send welcome messages, password resets, and product notifications through a straightforward developer API.
Public signup and live email sending are not available yet.
await fetch(`${process.env.RELYR_API_URL}/emails`, {
method: 'POST',
headers: {
Authorization: `Bearer ${process.env.RELYR_API_KEY}`,
'Content-Type': 'application/json'
},
body: JSON.stringify({
from: 'Your team <hello@your-domain.com>',
to: ['customer@example.com'],
subject: 'Welcome aboard',
html: '<h1>Good to have you here.</h1>'
})
});From your application to your delivery log
A sender people recognize
Verify a domain you control, choose your mailbox, and customize your sender name.
Know what happened
Follow each message through its event history. Inspect payloads and filter logs by domain or API key.
Keep your app informed
Receive signed email events at your HTTPS endpoint, with delivery attempts and retry history.
Built around permission
Useful messages.
Expected by the recipient.
Relyr is intended for transactional messages triggered by a customer action or an existing service relationship. It is not a tool for unsolicited outreach.
Read our acceptable-use policy- Welcome messages after someone signs up
- Password resets requested by the recipient
- Receipts and order confirmations
- Notifications about a product the recipient uses
Have a transactional email use case?
Tell us what you are building as we prepare for private beta.