Email lists can become cumbersome quickly: Every time you want to use one of your lists e.g. to send out an emailing to a certain target group, you or someone from your team spends an enormous amount of time going through the list. Segmenting works best with a proper database.
No matter whether you have a short list of contacts or a huge database, you need to get the right message to the matching recipient. What needs to be planned ahead in order to be able to segment a list to select those recipients?