The ideal TTL for an email varies depending on the purpose of the email and the behavior of your target audience. Here are some factors to consider:
Type of Email: Promotional emails may have a shorter TTL compared to newsletters or transactional emails. Audience Behavior: Analyze your audience's engagement patterns to determine how quickly they interact with your emails. Content Relevance: Ensure that the content remains relevant for the duration of the TTL. Time-sensitive offers should have a shorter TTL.