Increased Deliverability: Different vendors have varying levels of relationships with internet service providers (ISPs) and may have different deliverability rates. By using multiple vendors, you can optimize your chances of reaching your audience. Cost Efficiency: Different vendors offer various pricing models. By diversifying, you can take advantage of the best pricing structures for different aspects of your campaigns. Feature Variety: Each vendor offers unique features. Diversifying allows you to leverage the best tools and functionalities from multiple platforms. Risk Mitigation: If one vendor experiences issues, such as a technical failure or a compliance problem, having alternatives ensures your email marketing efforts continue uninterrupted.