Brevo

See the installation steps to learn how to install our app and change the form name

Before you start

• A Brevo account with at least one list — Brevo has no "all contacts" fallback, so a list must exist before you can map a form.
• An API key — SMTP & API → API keys.

Using Authorised IPs? If Security → Authorised IPs is enabled, Brevo rejects calls from addresses you have not listed, and deliveries fail with "unrecognised IP address". Add all three of FormRelay's IP addresses — or switch the restriction off.

Step 1: Set Up Brevo Integration

1. In your App Dashboard, go to the Sites menu and click on your Authorized Webflow Site.

• Here you will see all your forms across the site.
• A form can send to several destinations, but only one of each kind. Adding a second Brevo destination to the same form is not possible; edit the existing one instead.

2. From the left-hand menu, click on Integrations. You will see available categories such as:
   • Apps & Platforms (Notion, Slack, Discord, Airtable)
   • Email & marketing (HubSpot, Mailchimp, Klaviyo, Brevo, MailerLite, EmailOctopus, Moosend, Omnisend, Sender)
   • Automation & Webhooks (Webhook, Zapier, Make, etc.)

3. Under Email & marketing, click on Brevo.
   • Give the connection a recognizable name (e.g., “Brevo integration - Contact”).
   • Paste your Brevo API key (For details, see section 4: How to create a Brevo API key).
   • click "Save".
   • After clicking "Save", your added Brevo integration will appear under "CONNECTIONS".
   • You can edit or delete the connection at any time.

4. How to create a Brevo API key
   • In your Brevo Dashboard, go to "Settings".
   • From the left‑hand menu, under Organization settings, click SMTP & API.
   • Select API keys & MCP.
   • Click "+ Generate API key".
   • A pop‑up will appear:
     • Enter a recognizable Key name (e.g., “FormRelay by Faizatech” ).
     • Select an Expiry date.
     • Click Generate.
   • Your new API key will be displayed.
   • Copy the key and store it securely — you’ll need it to connect your app.

5. Go back to the Forms menu.
   • Choose a Form from your authorized Webflow site.
   • Click "+ Add destination".
   • A popup will open with a dropdown for Integration → Pick an integration.
   • Select your Brevo integration from the dropdown.
   • Configure Field Mapping by matching each field from your Webflow form to a property in your Brevo CRM -> Contact -> Lists.
   • Click Save when finished.

6. Test the integration:
   • Go to your published Webflow site.
   • Fill out and submit the form.
   • You will see the data appear in your Brevo Contacts -> Lists within a few seconds.

✅ Your Brevo integration is now successfully set up and ready to sync form submissions.

If deliveries fail with "unrecognised IP address"

Brevo has an Authorised IPs security setting. When it is switched on, Brevo only accepts API calls from IP addresses you have listed — and FormRelay delivers from its own servers, not from your computer, so those calls get rejected:

We have detected you are using an unrecognised IP address …

Because the delivering IP can change, this usually shows up as deliveries that work for a while and then start failing.

To fix it, open Security → Authorised IPs in Brevo and add all three of FormRelay's IP addresses. All three are needed, because outbound traffic is balanced across them. Turning the restriction off works too.

Troubleshooting

Still stuck?

Open the site's Logs page in FormRelay. Every attempt is recorded with the destination's own error message, and you can Replay a failed delivery once the cause is fixed. Delivery & Retries explains what the statuses mean.