Using SMTP API in email marketing has several advantages:
1. Automation: SMTP API allows for the automation of email campaigns, which can save time and reduce errors. 2. Scalability: It supports sending a large volume of emails, making it ideal for businesses with extensive email lists. 3. Customization: SMTP API enables dynamic content generation, allowing personalized emails for each recipient. 4. Tracking and Analytics: It provides detailed reports on email opens, clicks, bounces, and other metrics, which are crucial for optimizing campaigns.