Horizon provides a variety of filter options that you can use to either create segments using rule groups or to search for contacts. These include:
- Is
- Contains
- Starts with
- Ends with
- Is blank
The “contains” filter allows you to target contacts based on common sections of text. This can be particularly useful when filtering by email address, as you can target the domain name to report the number of contacts who belong to a certain organisation. For example, to find all contacts who work for HTK you could use the “contains” filter and search for “htk.co.uk”.
Using the “is blank” filter, you can create a group of customers based on the information you’re missing. For example, you may want to create a group of contacts who have no first name recorded in the database.
These filter options can be applied to a range of fields in your database, including text boxes, media types, dropdowns, numbers, dates, text areas, check boxes.
Filters for “campaign” and “opt-in categories” data
When creating a group or searching using opt-in categories or campaigns, you can use the following filter options:
- Is
- Is not
- Is any of
- Is none of

The “is any of” and “is none of” filters enable you to build groups and search in a more flexible way. For example, you might create a group based on contacts who have not interacted with any of your re-engagement campaigns, by selecting all of the campaigns you’re interested in within a single rule or search query. Note: These filters can only be used for campaigns and opt-in categories.