Beginner 10 min Updated May 19, 2026

Set Up Your Brevo API Key in Tajo

Generate a Brevo API key and connect it to Tajo so your Shopify data can sync securely.

Tajo connects to Brevo using an API key. This takes about 10 minutes and only needs to be done once per store.

You will need

  • ✅ A Brevo account (Free or paid)
  • ✅ Admin access to your Tajo account

Step 1: Generate the Key in Brevo

  1. Log in to Brevo.
  2. Open the account menu (top right) and go to SMTP & API.
  3. Select the API Keys tab.
  4. Click Generate a new API key, name it Tajo, and copy the key.

Copy the key immediately. Brevo only shows it once.

Step 2: Add the Key to Tajo

  1. In Tajo, go to Settings > Connections > Brevo.
  2. Paste the API key and save.
  3. Tajo validates the key and confirms the connection.

Step 3: Confirm It Works

After saving, Tajo runs a test call. A green status means the key is valid and the sync can begin. If you see an error, see Troubleshooting below.

Security Best Practices

  • Use a dedicated key named Tajo so you can revoke it without affecting other integrations.
  • Never share the key or paste it into client-side code.
  • Rotate the key periodically: generate a new one, update it in Tajo, then delete the old one in Brevo.

Troubleshooting

  • “Invalid API key”: the key was copied with a trailing space or is from the wrong Brevo account. Regenerate and paste again.
  • “Unauthorized”: the Brevo plan or user role lacks API access. Use an admin-level Brevo user.
  • Connection drops later: the key was deleted or rotated in Brevo. Generate a new one and update it in Tajo.

Next: connect Shopify to Brevo.