There are numerous elements within an email that can be tested, including:
1. Subject Lines: Test different phrases, lengths, and emojis to see what leads to higher open rates. 2. Email Copy: Compare different tones, lengths, and structures. 3. Call-to-Action (CTA): Test different wording, colors, and placements. 4. Images: Evaluate the impact of different images or no images at all. 5. Sending Time: Determine the best time and day to send emails for maximum engagement.