To optimize preheader text, consider the following:
Keep it brief: Aim for around 40-90 characters. Complement the subject line: Ensure it adds value and context to the subject line. Include a call-to-action: Prompt the recipient to take action. Avoid repetition: Do not simply repeat the subject line; provide additional information. Use emojis sparingly: Emojis can add a touch of personality but should be used judiciously.