> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cryptomate.me/llms.txt
> Use this file to discover all available pages before exploring further.

# Update card email

> Update the email address associated with a virtual card.

Updates the email address associated with a virtual card. Requires an API key with access level 2 or higher.

## Path parameters

<ParamField path="cardId" type="string" required>
  Card identifier.
</ParamField>

## Body

<ParamField body="business_email" type="string">
  New business email address.
</ParamField>

## Response

Returns HTTP 200 with an empty body on success.

<RequestExample>
  ```bash cURL theme={null}
  curl -X PUT "https://api.cryptomate.me/cards/virtual-cards/card_6f1e2a30-4a3c-4b2e-9a1d-5e8c9b7a1f23/email" \
    -H "x-api-key: $CRYPTOMATE_API_KEY" \
    -H "Content-Type: application/json" \
    -d '{
      "business_email": "new-cardholder@example.com"
    }'
  ```
</RequestExample>

<ResponseExample>
  ```json 200 OK theme={null}
  {}
  ```
</ResponseExample>