Create email sender

Creates a new email sender in your Brevo account. **Use this to:** - Add new senders for email campaigns - Configure sender identity (name and email) - Associate dedicated IPs with the sender (for dedicated IP accounts) - Set up domain-based sender configurations **Key information returned:** - Created sender ID - DKIM and SPF configuration status - Success confirmation **Important considerations:** - Verification email sent to specified sender address - DKIM and SPF configuration affects deliverability - Dedicated IP accounts require IP association during creation - IP weights must sum to 100 when specified - Sender must be verified before use in campaigns