Brevo's lack of full SPF alignment, often due to shared IP configurations, is a multifaceted issue impacting email deliverability. While DKIM alignment is consistently highlighted as a more critical factor for DMARC compliance and overall deliverability, SPF alignment contributes to improved sender reputation and DMARC compliance. The absence of full SPF alignment stems from factors such as technical debt, the prioritization of other features, the complexity of managing SPF records across multiple domains on shared IPs, and the coding/management/support overhead involved in retrofitting this capability. The impact on deliverability varies based on sending volume and recipient domain policies; low volumes may not be significantly affected, while larger volumes can experience negative consequences. Experts and marketers suggest monitoring deliverability metrics, ensuring proper DKIM alignment, and considering dedicated IPs or alternative ESPs if issues arise. Brevo's product team has this on their roadmap for 2025.