When choosing an email marketing API, consider the following factors:
Ease of Use: Look for APIs that are well-documented and easy to implement. Reliability: Choose an API from a reputable provider with a proven track record of reliability and uptime. Scalability: Ensure that the API can handle the volume of emails you plan to send, now and in the future. Security: Opt for APIs that offer robust security features to protect your data and that of your subscribers.