To integrate with SendInBlue, simply follow the steps below:

1. Log into your LeadsTunnel account.

2. On the left navigation menu, click on your account email to expand the drop down menu. Then, select "Account".

3. Click on "Integrations".

4. Under "Integrations", click on the "Add New Autoresponder/ CRM" button.

5. Select "SendInBlue" from the Autoresponder System drop-down menu.

6. Log into your SendInBlue account.
7. On the top right corner, where it shows your account name, click to expand a drop-down menu. Then, select "SMTP & API".

8. Under "Your API Keys", copy your API Key back to LeadsTunnel's "access_key" field. (Note: LeadsTunnel only support v3 API key)

9. Finally, name your CRM (Note: The CRM name is for internal use only, so you can name it to anything). 

10. Click “Connect” to complete the integration.