Here’s a reminder that can give your sales a nice boost this holiday season: Transactional emails such as order confirmations and shipping updates typically have a much higher open rate than another type of email. Use that fact to your advantage by adding a promotional offer to your transactional message. Include a price-off coupon, offer gift suggestions, or promote items for which you have excess inventory. Keep the message brief and make the offer tempting, and you’re sure to get additional business from a percentage of those who receive your email.