# Designated Identify Properties

Some destinations treat certain identify properties specially. As an example, some destinations treat the `email` property as the email to use when sending an email to a user. This page lists the destinations that accept designated properties and the properties they accept.

## Customer.io

| Property | Description                                                   |
| -------- | ------------------------------------------------------------- |
| `email`  | This is the email customer.io will use when sending an email. |

## Fullstory

| Property      | Description                                         |
| ------------- | --------------------------------------------------- |
| `displayName` | This is the name to show for the user in FullStory. |
| `email`       | This will show up as the user's email in FullStory. |

[See the FullStory docs on identifying users in FullStory for more information.](https://help.fullstory.com/hc/en-us/articles/360020828113)

## HubSpot

| Property | Description                                                                                                        |
| -------- | ------------------------------------------------------------------------------------------------------------------ |
| `email`  | HubSpot requires you send the `email` property. The value of this property will be used as the email for the user. |

## Iterable

| Property | Description                                                                                           |
| -------- | ----------------------------------------------------------------------------------------------------- |
| `email`  | In order to email a user in Iterable, you must first send an identify call with the `email` property. |

## Vero

| Property | Description                                                                                       |
| -------- | ------------------------------------------------------------------------------------------------- |
| `email`  | In order to email a user in Vero, you must first send an identify call with the `email` property. |

## Gainsight

<table data-header-hidden><thead><tr><th>Property</th><th>Description</th><th data-hidden></th></tr></thead><tbody><tr><td>Property</td><td>Description</td><td></td></tr><tr><td><code>Email</code></td><td>Gainsight requires an email field for each identify call.</td><td></td></tr></tbody></table>