---
title: Update a sending subdomain
---
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[API Reference](https://developers.cloudflare.com/api)
[Email Sending](https://developers.cloudflare.com/api/resources/email_sending)
[Subdomains](https://developers.cloudflare.com/api/resources/email_sending/subresources/subdomains)
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# Update a sending subdomain
PATCH/zones/{zone\_id}/email/sending/subdomains/{subdomain\_id}
Updates the activity-log preview preference for a sending subdomain.
##### Security
API Token
The preferred authorization scheme for interacting with the Cloudflare API. Create a token.
**Example:**Authorization: Bearer Sn3lZJTBX6kkg7OdcBUAxOO963GEIyGQqnFTOFYY
API Email + API Key
The previous authorization scheme for interacting with the Cloudflare API, used in conjunction with a Global API key.
**Example:**X-Auth-Email: user@example.com
The previous authorization scheme for interacting with the Cloudflare API. When possible, use API tokens instead of Global API keys.
**Example:**X-Auth-Key: 144c9defac04969c7bfad8efaa8ea194
##### P ath ParametersExpand Collapse
zone\_id: string
Identifier.
maxLength32
[Link to this property](<#(resource)%20email_sending.subdomains%20%3E%20(method)%20edit%20%3E%20(params)%20default%20%3E%20(param)%20zone_id%20%3E%20(schema)>)
subdomain\_id: string
Sending subdomain identifier.
maxLength32
[Link to this property](<#(resource)%20email_sending.subdomains%20%3E%20(method)%20edit%20%3E%20(params)%20default%20%3E%20(param)%20subdomain_id%20%3E%20(schema)>)
##### Body ParametersJSONExpand Collapse
drop\_suppressed\_recipients: optional boolean
Whether a send request that includes a recipient suppressed on this subdomain drops that recipient and still delivers to the rest, instead of failing the entire request.
[Link to this property](<#(resource)%20email_sending.subdomains%20%3E%20(method)%20edit%20%3E%20(params)%200%20%3E%20(param)%20drop_suppressed_recipients%20%3E%20(schema)>)
preview\_enabled: optional boolean
Whether sent messages from this subdomain can be previewed in the activity log.
[Link to this property](<#(resource)%20email_sending.subdomains%20%3E%20(method)%20edit%20%3E%20(params)%200%20%3E%20(param)%20preview_enabled%20%3E%20(schema)>)
##### ReturnsExpand Collapse
errors: array of object {code, message, documentation\_url, source }
code: number
minimum1000
Link to this property
message: string
Link to this property
documentation\_url: optional string
Link to this property
source: optional object {pointer }
pointer: optional string
Link to this property
Link to this property
[Link to this property](<#(resource)%20email_sending.subdomains%20%3E%20(method)%20edit%20%3E%20(network%20schema)%20%3E%20(property)%20errors>)
messages: array of object {code, message, documentation\_url, source }
code: number
minimum1000
Link to this property
message: string
Link to this property
documentation\_url: optional string
Link to this property
source: optional object {pointer }
pointer: optional string
Link to this property
Link to this property
[Link to this property](<#(resource)%20email_sending.subdomains%20%3E%20(method)%20edit%20%3E%20(network%20schema)%20%3E%20(property)%20messages>)
success: true
Whether the API call was successful.
[Link to this property](<#(resource)%20email_sending.subdomains%20%3E%20(method)%20edit%20%3E%20(network%20schema)%20%3E%20(property)%20success>)
result: optional object {enabled, name, tag, 6 more }
enabled: boolean
Whether Email Sending is enabled on this subdomain.
Link to this property
name: string
The exact domain name or a leftmost wildcard such as *.example.com.
Link to this property
tag: string
Sending subdomain identifier.
maxLength32
Link to this property
created: optional string
The date and time the destination address has been created.
formatdate-time
Link to this property
dkim\_selector: optional string
The DKIM selector used for email signing. Wildcard rows publish the selector and sign with d=<base>.
Link to this property
drop\_suppressed\_recipients: optional boolean
Whether a send request that includes a recipient suppressed on this subdomain drops that recipient and still delivers to the rest, instead of failing the entire request.
Link to this property
modified: optional string
The date and time the destination address was last modified.
formatdate-time
Link to this property
preview\_enabled: optional boolean
Whether sent messages from this subdomain can be previewed in the activity log.
Link to this property
return\_path\_domain: optional string
The return-path domain used for bounce handling. Wildcard rows use cf-bounce.<base>.
Link to this property
[Link to this property](<#(resource)%20email_sending.subdomains%20%3E%20(method)%20edit%20%3E%20(network%20schema)%20%3E%20(property)%20result>)
### Update a sending subdomain
HTTP
HTTPTypeScriptPythonGoTerraform
```
curl https://api.cloudflare.com/client/v4/zones/$ZONE_ID/email/sending/subdomains/$SUBDOMAIN_ID \
-X PATCH \
-H 'Content-Type: application/json' \
-H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
-d '{
"drop_suppressed_recipients": true,
"preview_enabled": true
}'
```
200 example
```
{
"errors": [
{
"code": 1000,
"message": "message",
"documentation_url": "documentation_url",
"source": {
"pointer": "pointer"
}
}
],
"messages": [
{
"code": 1000,
"message": "message",
"documentation_url": "documentation_url",
"source": {
"pointer": "pointer"
}
}
],
"success": true,
"result": {
"enabled": true,
"name": "sub.example.com",
"tag": "aabbccdd11223344aabbccdd11223344",
"created": "2014-01-02T02:20:00Z",
"dkim_selector": "cf-bounce",
"drop_suppressed_recipients": false,
"modified": "2014-01-02T02:20:00Z",
"preview_enabled": true,
"return_path_domain": "cf-bounce.sub.example.com"
}
}
```
##### Returns Examples
200 example
```
{
"errors": [
{
"code": 1000,
"message": "message",
"documentation_url": "documentation_url",
"source": {
"pointer": "pointer"
}
}
],
"messages": [
{
"code": 1000,
"message": "message",
"documentation_url": "documentation_url",
"source": {
"pointer": "pointer"
}
}
],
"success": true,
"result": {
"enabled": true,
"name": "sub.example.com",
"tag": "aabbccdd11223344aabbccdd11223344",
"created": "2014-01-02T02:20:00Z",
"dkim_selector": "cf-bounce",
"drop_suppressed_recipients": false,
"modified": "2014-01-02T02:20:00Z",
"preview_enabled": true,
"return_path_domain": "cf-bounce.sub.example.com"
}
}
```