In This Article

• How the Unique Contact ID Works
• What Makes an Acceptable Unique Contact ID
• When To Use Different Unique Contact IDs
• Where To Find the Unique Contact ID Setting

How the Unique Contact ID Works

The Unique Contact ID is the attribute that identifies each of your contacts individually.
 When you start using the Employee Email Web App, the default ID is the contact email address. 

You can change it anytime after your first contact import. You need to complete the first import before customizing this setting because Employee Email has to understand your contact directory structure before being able to identify what attributes can be used as Unique Contact IDs.

What Makes an Acceptable Unique Contact ID

Any attribute can be used as the Unique Contact ID as long as:

• it exists for each of your contacts
• it is unique and valid for each of your contacts
• it does not change over time

Changes in the Unique Contact ID can take a couple of minutes if you have a large directory (more than 10,000 contacts).

If you have the intention of changing your Unique Contact ID even before importing any CSVs or connecting any integrations, we recommend that you do a first import with only a small number of contacts, change the settings as you prefer, and then finish adding all your remaining contacts.

When To Use Different Unique Contact IDs

Unique Contact ID flexible settings are ideal for cases when you have contacts that change emails addresses frequently. In this case, changing the ID allows better targeting and tracking in the long term. 

It also makes it easier to manage contact directories with employees that have multiple emails.

Where To Find the Unique Contact ID Setting

Unique Contact ID is accessible to all Employee Email Web App customers. You can access it on the Settings page, by clicking the Web App Sending tile. It will only be unlocked for edits after the first contact import (either by CSV or integration).