The 5 Ts of email marketing are a framework that can help guide your strategy and improve the effectiveness of your campaigns. They are: 1. Targeting: Segmenting your audience based on their behavior or characteristics, such as demographics or interests, to ensure that your content is relevant and valuable to each subscriber. 2. Timing: Sending your emails at the most appropriate time to maximize open rates and engagement, which may vary based on factors such as time zones, industry, and your specific audience. 3. Testing: Experimenting with different elements of your emails, such as subject lines, calls-to-action, and content, to optimize your campaigns and improve performance over time. 4. Tracking: Measuring the success of your campaigns through metrics such as open rates, click-through rates, and conversions and using these insights to refine your strategy and improve results. 5. Triggering: Sending targeted and timely emails based on specific actions or events, such as a subscriber joining your list, making a purchase, or abandoning a cart, to increase engagement and drive conversions.