There are several types of testing methods you can employ:
A/B Testing: This involves sending two versions of an email to small segments of your list to see which performs better. Multivariate Testing: This tests multiple variables simultaneously to understand how different elements interact with each other. Subject Line Testing: Focuses on the effectiveness of different subject lines to increase open rates. Content Testing: Tests various versions of email content to see which one drives more engagement. Send Time Optimization: Determines the best time to send emails for maximum engagement.