Sending Emails

Nitrosend supports two ways to send emails: campaigns for bulk sends to a list, and transactional messages for one-off sends triggered by your app.

Campaigns

Campaigns let you send an email to a contact list or segment. Create one from the dashboard:

1. Go to Campaigns > New Campaign
2. Choose a template or start from scratch
3. Select your audience (a contact list or segment)
4. Preview, test, and send

Transactional messages

For receipts, password resets, and other triggered emails, use the API:

curl -X POST https://api.nitrosend.com/v1/my/messages \
  -H "Authorization: Bearer nskey_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "channel": "email",
    "to": "user@example.com",
    "subject": "Your receipt",
    "html": "<h1>Thanks for your purchase</h1>",
    "body": "Thanks for your purchase"
  }'

Email editor

The drag-and-drop editor lets you build responsive emails visually. Your brand theme (colors, fonts, logo) is applied automatically. All emails are rendered as MJML under the hood for maximum inbox compatibility.

Sending activity

The sending activity log shows individual sends across campaigns, flows, transactional messages, and tests. Use it to inspect delivery status, failures, and message details after a send.

Use the suppressions API when you need the account-level block list and bounce diagnostic text behind failed recipients. GET /v1/my/suppressions returns the suppressed address, reason, source event reference, and bounded provider diagnostic when available.

View in browser

Emails sent from Nitrosend can include a view-in-browser snapshot. This gives recipients a stable web version of the email and gives your team a reliable way to inspect what was sent after delivery.