# Update an email sender

`POST https://backend.estactics.com/api/emailSenders/update`

Changes a sender. Always send `name` and `username`. Setting `isDefault` to true removes it from the previous default sender.

Authentication: `Authorization: Bearer YOUR_API_KEY`. Required permission: `emails.MANAGE`.

## Body parameters

- `id` (integer, required): ID of the sender.
- `name` (string, required): The name people see.
- `username` (string, required): The part of the address before the @.
- `isDefault` (boolean): True for the sender used by default.

## Example request body

```json
{
  "id": 4,
  "name": "Sales",
  "username": "sales"
}
```