A trigger can also be a passive customer behavior, such as not opening your last few emails, not logging in to use your service for a while, or downloading a product without downloading the tutorial or an important related resource. These types of drip campaigns can help re-engage customers who were moving through the customer lifecycle but have somehow gotten “stuck.”
Purchase (formerly the bottom): This phase should drive the sale, such as a free trial or discount offer. These messages can be much more direct and sales-oriented since these customers have indicated they are closer to a purchase than others. In this phase, it’s important to keep your emails focused on the primary call to action (CTA) and make sure the transaction is as easy as possible. Some companies opt to offer post-purchase set-up assistance or support to help customers move from engagement to purchase.
When you're using email as a marketing tool, you're working on a pretty personal basis. This isn't ‘drive-by' stuff -you're directly targeting customers from their inboxes. There's a huge amount of potential which comes with this kind of marketing... but you'll only reap that potential if you REALLY understand both the marketplace you're operating from, and the audience you're talking to.