Several factors can contribute to inconsistent behavior:
1. Email Content: If your content varies significantly in quality, relevance, or tone, it can lead to inconsistent engagement. 2. Sending Frequency: Irregular sending patterns can confuse subscribers, leading to lower engagement. 3. Segmenting Issues: Poorly targeted campaigns can result in emails being sent to subscribers who are not interested in the content. 4. External Factors: Events or changes in the recipient's environment can also affect their behavior.