Gmail offers several benefits for email marketing, including a large user base, strong email deliverability, mobile-friendliness, categorized tabs for promotional emails, image display, integration with Google Workspace, personalization, advanced features like AMP for Email, tracking and analytics, automation, A/B testing, customer segmentation, and enhanced security. These features can help marketers reach a wide audience, improve engagement, and track the performance of their email campaigns. However, adhering to best practices is essential to ensure successful email marketing on Gmail.