Several factors can influence how much you pay for email marketing services:
1. Subscriber Count: The larger your list, the more you might have to pay. Many ESPs have tiered pricing based on the number of subscribers. 2. Email Volume: Costs can also depend on the number of emails you send per month. 3. Features: Advanced features like A/B testing, automation, and personalization often come at a higher price. 4. Support: Premium customer support can also add to your costs.