All integrations Marketing

Brevo (Sendinblue) + MailKite

Brevo (formerly Sendinblue) is a marketing and transactional email platform. Use MailKite as a drop-in replacement or alongside Brevo — same SMTP interface, better deliverability for developers.

What you need

A verified domain with SPF + DKIM published
Your API key (mk_live_…)
Brevo account (optional — MailKite replaces or complements it)

Send email

Swap your SMTP host to MailKite for transactional email, or run both side by side.

smtp-config

# MailKite as a Brevo replacement or complement
# Same SMTP pattern, different infrastructure

SMTP Host: smtp.mailkite.dev
SMTP Port: 587
SMTP Username: mailkite
SMTP Password: mk_live_...
From: hello@yourdomain.com

# Or configure Brevo's SMTP alongside:
# Brevo SMTP: smtp-relay.brevo.com:587
# Use Brevo for marketing, MailKite for transactional

Receive inbound email (optional)

Forward inbound email to Brevo's webhook endpoint for marketing automation triggers.

handle-inbound.ts

// Receive inbound email → Brevo automation webhook
async function handleInbound(email) {
  // Forward to Brevo's webhook for automation triggers
  const res = await fetch(process.env.BREVO_WEBHOOK_URL, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(email),
  });
  return res.json();
}

Test it

Send a test email via your app's SMTP config to verify the swap works.

terminal

# Test your SMTP connection
echo "Test" | swaks --to test@example.com --from hello@yourdomain.com \
  --server smtp.mailkite.dev --port 587 \
  --auth USER=mailkite --auth-password mk_live_...

Troubleshooting

Brevo's SMTP relay is smtp-relay.brevo.com. If migrating, just swap the host — no code changes needed.
Brevo free tier has daily sending limits. MailKite's free tier includes unlimited domains.
Check your Brevo API key under Settings → SMTP & API.

See the SMTP relay docs for the full connection reference, or all integrations for other platforms.