# Use tags to track engagement

> Label contacts by behaviour or interest in real time, and build segments and targeted campaigns around them.

Source: https://www.kualo.com/knowledgebase/contacts-audiences/use-tags-to-track-engagement
Updated: 2026-06-10

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Tags are labels you attach to contacts to classify them however you like - by behaviour, by interest, by where they are in their journey. Tagging updates a contact's profile in real time, so you can build segments and target campaigns around the actions people actually take. This guide covers creating and applying them.

## Create a tag

1. Go to **Audience**, then **Tags**.
2. Open the menu and type your new tag's name.
3. Click **Create 1 tag**.

Your tag is ready to use.

## Tag a contact

1. Go to **Audience**, then **Contacts**.
2. Select your list.
3. Tick the contact you want to tag.
4. In the **Actions** menu at the bottom, choose **Add or remove tags**.
5. Pick the tag (or create one here) and click **Tag**, then **Done**.

## Tag during import

You can apply a tag while importing a list, which segments it automatically as it comes in. If you already have a segment built on a tag, choose it during import and every contact joins that segment. Importing from another tool? Include your tags in a column separated by commas, and they're created individually during import.

## Troubleshooting

**Tags don't show in the library** - refresh after creating, check for duplicate names, and re-login if needed.

**Can't add tags to contacts** - make sure contacts are ticked, the tags exist first, and you have edit permission; try one at a time.

**Tags don't import** - put them in a dedicated CSV column, comma-separated, and check the mapping includes that column.

**Can't create a tag** - avoid special characters and overly long names, and check you haven't hit a tag limit.

**Bulk tagging fails** - reduce the number selected (try 500 or fewer), and make sure they're all active.

For dynamic, rule-based grouping, see **[Create segments](/knowledgebase/contacts-audiences/create-segments)**.

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_Source: Kualo Knowledgebase — https://www.kualo.com/knowledgebase/contacts-audiences/use-tags-to-track-engagement · © Kualo Ltd._