This morning, I received this email from Amazon with the simple and effective subject line “Buy it again”.  It featured several replenishable items that I have purchased in the last two months and included prices and links to make it easy for me to reorder.

If you sell items that can be replenished, these email campaigns are a must! They have the highest conversion rates, averaging 28.59%. Best of all, these campaigns can be automated, deploying at either a selected amount of time after the sale or based on average re-order times.