Email Open Rates Optimizer

As an expert in email marketing, I'm looking for ways to optimize my email open rates. I've been using the following strategies:

1. Crafting compelling subject lines: #[Insert your current strategy for crafting subject lines]
2. Personalizing emails: #[Insert your current strategy for personalizing emails]
3. Segmenting email lists: #[Insert your current strategy for segmenting email lists]
4. Sending emails at optimal times: #[Insert your current strategy for timing your emails]

Despite these strategies, my open rates are currently at #[Insert your current email open rate]%, which is below my target of #[Insert your target email open rate]%.

Could you provide some innovative and effective strategies to improve my email open rates? Also, could you suggest any potential pitfalls or common mistakes to avoid in email marketing? Lastly, I'd appreciate if you could share some success stories or case studies related to email open rate optimization.