API Reference

Email Security

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Sending Domain Restrictions

List sending domain restrictions

GET/accounts/{account_id}/email-security/settings/sending_domain_restrictions

Get a sending domain restriction

GET/accounts/{account_id}/email-security/settings/sending_domain_restrictions/{sending_domain_restriction_id}

Create a sending domain restriction

POST/accounts/{account_id}/email-security/settings/sending_domain_restrictions

Update a sending domain restriction

PATCH/accounts/{account_id}/email-security/settings/sending_domain_restrictions/{sending_domain_restriction_id}

Delete a sending domain restriction

DELETE/accounts/{account_id}/email-security/settings/sending_domain_restrictions/{sending_domain_restriction_id}

ModelsExpand Collapse

SendingDomainRestrictionListResponse object { id, comments, created_at, 4 more }

A sending domain restriction that enforces TLS (Transport Layer Security) requirements for emails from specific domains. If TLS is required, mail without TLS from the specified domain will be dropped.

id: optional string

Sending domain restriction identifier.

formatuuid

comments: optional string

maxLength1024

created_at: optional string

formatdate-time

domain: optional string

Domain that requires TLS enforcement.

exclude: optional array of string

Excluded subdomains that are exempt from TLS requirements.

Deprecatedlast_modified: optional string

Deprecated, use modified_at instead. End of life: November 1, 2026.

formatdate-time

modified_at: optional string

formatdate-time

SendingDomainRestrictionGetResponse object { id, comments, created_at, 4 more }

A sending domain restriction that enforces TLS (Transport Layer Security) requirements for emails from specific domains. If TLS is required, mail without TLS from the specified domain will be dropped.

id: optional string

Sending domain restriction identifier.

formatuuid

comments: optional string

maxLength1024

created_at: optional string

formatdate-time

domain: optional string

Domain that requires TLS enforcement.

exclude: optional array of string

Excluded subdomains that are exempt from TLS requirements.

Deprecatedlast_modified: optional string

Deprecated, use modified_at instead. End of life: November 1, 2026.

formatdate-time

modified_at: optional string

formatdate-time

SendingDomainRestrictionCreateResponse object { id, comments, created_at, 4 more }

A sending domain restriction that enforces TLS (Transport Layer Security) requirements for emails from specific domains. If TLS is required, mail without TLS from the specified domain will be dropped.

id: optional string

Sending domain restriction identifier.

formatuuid

comments: optional string

maxLength1024

created_at: optional string

formatdate-time

domain: optional string

Domain that requires TLS enforcement.

exclude: optional array of string

Excluded subdomains that are exempt from TLS requirements.

Deprecatedlast_modified: optional string

Deprecated, use modified_at instead. End of life: November 1, 2026.

formatdate-time

modified_at: optional string

formatdate-time

SendingDomainRestrictionEditResponse object { id, comments, created_at, 4 more }

A sending domain restriction that enforces TLS (Transport Layer Security) requirements for emails from specific domains. If TLS is required, mail without TLS from the specified domain will be dropped.

id: optional string

Sending domain restriction identifier.

formatuuid

comments: optional string

maxLength1024

created_at: optional string

formatdate-time

domain: optional string

Domain that requires TLS enforcement.

exclude: optional array of string

Excluded subdomains that are exempt from TLS requirements.

Deprecatedlast_modified: optional string

Deprecated, use modified_at instead. End of life: November 1, 2026.

formatdate-time

modified_at: optional string

formatdate-time

SendingDomainRestrictionDeleteResponse object { id }

id: string

Sending domain restriction identifier.

formatuuid