Timing is crucial in email marketing. Here are some general guidelines for sending event updates: 1. Initial Announcement: Send this as soon as the event details are finalized to give your audience plenty of time to plan. 2. Reminders: Send reminder emails at different intervals, such as one month, one week, and one day before the event. 3. Last-Minute Changes: Inform your audience immediately if there are any last-minute changes to the event. 4. Post-Event Follow-Up: Send a thank-you email and a recap of the event to keep the momentum going.