Background Information
Link categories group links so they can be used in statistics, activities, and selections. A link category must be created before it can be used.
For landing pages, only automatic assignment is possible: the message contains an Engage Variable rather than a link, and the variable is only resolved into a link address when the message is processed. Manual assignment requires the link to be identifiable during message creation; automatic assignment uses a keyword or a word from the landing-page URL.
Manual assignment of a link category is lost when the message is saved as a draft.
Create and Configure a Link Category
Create link categories and choose how they are assigned (manually, by keyword, or by Regex) in the New Link Category (window). New categories receive the lowest priority by default; you can change this in the Link Category Overview (tab).
To assign a category to the links in a message, see Manually Assign Link Categories Before Sendout and Automatic Assignment of Link Categories.