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

# Partially Update a Donor Email Address

> Updates only the email address fields you send.

Send just the fields you want changed — for example `value` or `isOptedIn` — and the rest stay as they are. Returns the updated email address.


## API Specification

The full API specification for this endpoint is available in the [documentation index](https://docs.virtuous.org/llms.txt).