diff --git a/catalog/permissions.json b/catalog/permissions.json
index 903589f..82bc5ee 100644
--- a/catalog/permissions.json
+++ b/catalog/permissions.json
@@ -289,6 +289,12 @@
       "surfaces": ["sender_domain"],
       "profiles": ["read", "deploy", "full-operator"]
     },
+    {
+      "name": "Email Sending Write",
+      "scope": "zone",
+      "surfaces": ["sender_domain"],
+      "profiles": ["deploy", "full-operator"]
+    },
     {
       "name": "Turnstile Sites Read",
       "scope": "account",
diff --git a/catalog/surfaces.json b/catalog/surfaces.json
index ed4e77f..898531e 100644
--- a/catalog/surfaces.json
+++ b/catalog/surfaces.json
@@ -543,6 +543,7 @@
       "description": "Cloudflare Email Sending sender subdomains in a specific zone.",
       "backend": "inventory_script",
       "inventory_script": "scripts/cf_inventory_sender_domains.sh",
+      "apply_script": "scripts/cf_mutate_sender_domain.sh",
       "permission_family": "Email Sending",
       "selectors": ["id", "name", "zone"],
       "actions": {
@@ -565,12 +566,24 @@
           "required_selectors": ["zone"]
         },
         "apply": {
-          "supported": false
+          "supported": true,
+          "risk": "write",
+          "preview_required": true,
+          "verification_required": true,
+          "operations": {
+            "enable": {
+              "risk": "write",
+              "required_selectors": ["zone", "name"],
+              "public_example": "cfctl apply sender_domain enable --zone example.com --name example.com --plan"
+            }
+          }
         }
       },
       "examples": [
         "./cfctl list sender_domain --zone example.com",
-        "./cfctl get sender_domain --zone example.com --name example.com"
+        "./cfctl get sender_domain --zone example.com --name example.com",
+        "./cfctl apply sender_domain enable --zone example.com --name example.com --plan",
+        "./cfctl apply sender_domain enable --zone example.com --name example.com --ack-plan <operation-id>"
       ]
     },
     "d1.database": {
diff --git a/commands/cfctl.sh b/commands/cfctl.sh
index 6c1de2e..25f9de8 100644
--- a/commands/cfctl.sh
+++ b/commands/cfctl.sh
@@ -3895,6 +3895,16 @@ cfctl_handle_apply() {
         "BODY_JSON=${CFCTL_BODY_JSON}" \
         "BODY_FILE=${CFCTL_BODY_FILE}"
       ;;
+    sender_domain)
+      cfctl_run_backend_script "${script_path}" \
+        "APPLY=$([[ "${CFCTL_PLAN}" == "1" ]] && echo 0 || echo 1)" \
+        "OPERATION=${operation}" \
+        "ZONE_NAME=${CFCTL_ZONE_NAME}" \
+        "ZONE_ID=${CFCTL_ZONE_ID}" \
+        "SENDER_DOMAIN=${CFCTL_NAME}" \
+        "BODY_JSON=${CFCTL_BODY_JSON}" \
+        "BODY_FILE=${CFCTL_BODY_FILE}"
+      ;;
     zone.ruleset)
       cfctl_run_backend_script "${script_path}" \
         "APPLY=$([[ "${CFCTL_PLAN}" == "1" ]] && echo 0 || echo 1)" \
diff --git a/docs/capabilities.md b/docs/capabilities.md
index 2b85e90..7ce9f1d 100644
--- a/docs/capabilities.md
+++ b/docs/capabilities.md
@@ -27,7 +27,7 @@ This table is the operable runtime surface. The standards layer and docs bank in
 | `queue` | yes | yes | no | yes | no | `-` | `-` | `-` |
 | `r2.bucket` | yes | yes | no | yes | no | `-` | `-` | `-` |
 | `security.txt` | yes | yes | yes | yes | yes | `security.txt` | `security-center-securitytxt, api-auth` | `security_txt` |
-| `sender_domain` | yes | yes | no | yes | no | `-` | `-` | `-` |
+| `sender_domain` | yes | yes | yes | yes | no | `-` | `-` | `-` |
 | `tunnel` | yes | yes | yes | yes | yes | `tunnel` | `api-auth` | `tunnel` |
 | `turnstile.widget` | yes | yes | yes | yes | no | `-` | `-` | `-` |
 | `vulnerability_scanner.credential_set` | yes | yes | no | yes | no | `-` | `api-shield-vulnerability-scanner, api-auth` | `-` |
@@ -79,6 +79,7 @@ This matrix is derived from the same catalogs used by `cfctl explain`, `cfctl cl
 | `security.txt` | `delete` | `destructive` | yes | `lease` | yes | `delete` | `dev`, `global` | required: zone |
 | `security.txt` | `upsert` | `write` | yes | `apply` | yes | `-` | `dev`, `global` | required: zone |
 | `security.txt` | `sync` | `write` | yes | `apply` | yes | `-` | `dev`, `global` | state match: zone |
+| `sender_domain` | `enable` | `write` | yes | `apply` | yes | `-` | `dev`, `global` | required: zone, name |
 | `tunnel` | `cleanup-connections` | `destructive` | yes | `lease` | yes | `delete` | `dev`, `global` | required: id |
 | `tunnel` | `configure` | `write` | yes | `apply` | yes | `-` | `dev`, `global` | required: id |
 | `tunnel` | `create` | `write` | yes | `apply` | yes | `-` | `dev`, `global` | - |
@@ -116,7 +117,6 @@ These surfaces are first-class read surfaces but do not expose `apply` or desire
 | `pages.project` | `list`, `get`, `verify`, `can` | - | `scripts/cf_inventory_pages.sh` |
 | `queue` | `list`, `get`, `verify`, `can` | - | `scripts/cf_inventory_queues.sh` |
 | `r2.bucket` | `list`, `get`, `verify`, `can` | - | `scripts/cf_inventory_r2.sh` |
-| `sender_domain` | `list`, `get`, `verify`, `can` | required: zone | `scripts/cf_inventory_sender_domains.sh` |
 | `vulnerability_scanner.credential_set` | `list`, `get`, `verify`, `can` | - | `scripts/cf_inventory_vulnerability_scanner.sh` |
 | `vulnerability_scanner.scan` | `list`, `get`, `verify`, `can` | - | `scripts/cf_inventory_vulnerability_scanner.sh` |
 | `vulnerability_scanner.target_environment` | `list`, `get`, `verify`, `can` | - | `scripts/cf_inventory_vulnerability_scanner.sh` |
diff --git a/scripts/cf_maildesk_cf_lifecycle.py b/scripts/cf_maildesk_cf_lifecycle.py
index b72234e..c9594a9 100644
--- a/scripts/cf_maildesk_cf_lifecycle.py
+++ b/scripts/cf_maildesk_cf_lifecycle.py
@@ -464,6 +464,14 @@ def sender_readback_available(sender: dict[str, Any]) -> bool:
     return provider_readback not in {"", "not_available", "unavailable", "unknown"}
 
 
+def sender_domain_enable_plan_command(domain: str) -> str:
+    quoted_domain = shlex.quote(domain)
+    return (
+        "cfctl apply sender_domain enable "
+        f"--zone {quoted_domain} --name {quoted_domain} --plan"
+    )
+
+
 def normalize_sender_mode(mode: str) -> str:
     normalized = (mode or "disabled").lower()
     if normalized in {"cloudflare_first", "cloudflare", "cloudflare_email_service"}:
@@ -757,6 +765,7 @@ def append_sender_checks(
                     "Sender-provider domain is not present in readback",
                     "verified",
                     {"provider": mode, "domains": sender_evidence.get("domains") or []},
+                    sender_domain_enable_plan_command(domain),
                 )
             )
         elif not provider_verified:
@@ -768,6 +777,7 @@ def append_sender_checks(
                     "Sender-provider domain is not verified",
                     "verified",
                     provider_status,
+                    sender_domain_enable_plan_command(domain),
                 )
             )
 
diff --git a/scripts/cf_mutate_sender_domain.sh b/scripts/cf_mutate_sender_domain.sh
new file mode 100755
index 0000000..f7e8420
--- /dev/null
+++ b/scripts/cf_mutate_sender_domain.sh
@@ -0,0 +1,104 @@
+#!/usr/bin/env bash
+
+# Mutates Cloudflare Email Sending sender subdomains.
+#
+#   enable: POST /zones/:zone_id/email/sending/subdomains
+#
+# Required env from cfctl:
+#   OPERATION       enable
+#   ZONE_NAME or ZONE_ID
+#   SENDER_DOMAIN   subdomain/domain name to enable for Email Sending
+
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+# shellcheck disable=SC1091
+source "${ROOT_DIR}/scripts/lib/cloudflare.sh"
+
+cf_load_cloudflare_env
+cf_require_tools jq
+cf_require_api_auth
+cf_require_backend_dispatch "cfctl apply sender_domain <operation> ..."
+
+OPERATION="${OPERATION:-enable}"
+ZONE_NAME="${ZONE_NAME:-}"
+ZONE_ID="${ZONE_ID:-}"
+SENDER_DOMAIN="${SENDER_DOMAIN:-${DOMAIN_NAME:-}}"
+
+if [[ -z "${ZONE_ID}" ]]; then
+  if [[ -z "${ZONE_NAME}" ]]; then
+    echo "ZONE_NAME or ZONE_ID must be set" >&2
+    exit 1
+  fi
+  ZONE_ID="$(cf_resolve_zone_id "${ZONE_NAME}")"
+fi
+
+if [[ -z "${ZONE_ID}" || "${ZONE_ID}" == "null" ]]; then
+  echo "Unable to resolve zone" >&2
+  exit 1
+fi
+
+if [[ -z "${SENDER_DOMAIN}" ]]; then
+  echo "SENDER_DOMAIN must be set" >&2
+  exit 1
+fi
+
+if [[ -n "${ZONE_NAME}" ]]; then
+  zone_lc="$(printf '%s' "${ZONE_NAME}" | tr '[:upper:]' '[:lower:]')"
+  sender_lc="$(printf '%s' "${SENDER_DOMAIN}" | tr '[:upper:]' '[:lower:]')"
+  if [[ "${sender_lc}" != "${zone_lc}" && "${sender_lc}" != *".${zone_lc}" ]]; then
+    echo "SENDER_DOMAIN must be within ZONE_NAME" >&2
+    exit 1
+  fi
+fi
+
+build_payload() {
+  if [[ -n "${BODY_JSON:-}" || -n "${BODY_FILE:-}" ]]; then
+    cf_resolve_json_payload "${BODY_JSON:-}" "${BODY_FILE:-}"
+    return
+  fi
+
+  jq -n --arg name "${SENDER_DOMAIN}" '{name: $name}'
+}
+
+export SURFACE="sender-domain"
+export OUTPUT_STEM="sender-domain-mutation"
+export APPLY="${APPLY:-0}"
+
+case "${OPERATION}" in
+  enable)
+    export REQUEST_METHOD="POST"
+    export REQUEST_PATH="/zones/${ZONE_ID}/email/sending/subdomains"
+    export VERIFY_PATH="/zones/${ZONE_ID}/email/sending/subdomains"
+    export BODY_JSON="$(build_payload)"
+    ;;
+  *)
+    echo "Unsupported OPERATION: ${OPERATION}" >&2
+    exit 1
+    ;;
+esac
+
+set +e
+mutation_report="$("${ROOT_DIR}/scripts/cf_api_apply.sh")"
+status=$?
+set -e
+printf '%s\n' "${mutation_report}"
+
+report_file="$(printf '%s\n' "${mutation_report}" | tail -n 1)"
+if [[ "${APPLY}" == "1" && "${status}" -eq 0 && -f "${report_file}" ]]; then
+  if jq -e --arg name "${SENDER_DOMAIN}" '
+    (.verification.response.result // [])
+    | any(
+        .[]?;
+        (((.name // .domain // "") | ascii_downcase) == ($name | ascii_downcase))
+        and (.enabled == true)
+      )
+  ' "${report_file}" >/dev/null; then
+    exit 0
+  fi
+
+  echo "Email Sending sender-domain verification failed for ${SENDER_DOMAIN}" >&2
+  exit 1
+fi
+
+exit "${status}"
diff --git a/scripts/verify_maildesk_cf_contract.sh b/scripts/verify_maildesk_cf_contract.sh
index 74d2f07..f0a03de 100755
--- a/scripts/verify_maildesk_cf_contract.sh
+++ b/scripts/verify_maildesk_cf_contract.sh
@@ -178,7 +178,7 @@ jq -e '
   and .readiness.mail_ready == false
   and (.drift_classes | index("sender_domain_drift")) != null
   and (.drift_classes | index("provider_status_unavailable")) == null
-  and any(.plan.operations[]; .surface == "sender_domain" and .blocked == "sender-domain authentication is not yet a cfctl mutation surface")
+  and any(.plan.operations[]; .surface == "sender_domain" and .preview_command == "cfctl apply sender_domain enable --zone example.com --name example.com --plan" and .blocked == null)
 ' "${unverified_sender_artifact_path}" >/dev/null || die "unverified sender-domain drift contract did not match"
 
 cfctl_output="$(
diff --git a/scripts/verify_permission_catalog.py b/scripts/verify_permission_catalog.py
index 286dff2..0d2eff5 100644
--- a/scripts/verify_permission_catalog.py
+++ b/scripts/verify_permission_catalog.py
@@ -322,8 +322,9 @@ def validate_command_fixtures(catalog: dict) -> list[dict]:
             "expected": (
             "cfctl token mint --name 'cfctl-deploy-operator' --permission 'Account Settings Read' "
             "--permission 'D1 Metadata Read' --permission 'D1 Read' --permission 'D1 Write' "
-            "--permission 'Email Sending Read' --permission 'Pages Read' --permission 'Pages Write' "
-            "--permission 'Queues Read' --permission 'Queues Write' --permission 'Workers R2 Storage Read' "
+            "--permission 'Email Sending Read' --permission 'Email Sending Write' "
+            "--permission 'Pages Read' --permission 'Pages Write' --permission 'Queues Read' "
+            "--permission 'Queues Write' --permission 'Workers R2 Storage Read' "
             "--permission 'Workers R2 Storage Write' --permission 'Workers Routes Read' "
             "--permission 'Workers Routes Write' --permission 'Workers Scripts Read' "
             "--permission 'Workers Scripts Write' --permission 'Zone Read' "
diff --git a/scripts/verify_static_contract.sh b/scripts/verify_static_contract.sh
index 9dd5457..994e4c9 100755
--- a/scripts/verify_static_contract.sh
+++ b/scripts/verify_static_contract.sh
@@ -105,6 +105,7 @@ bash -n \
   "${ROOT_DIR}/scripts/cf_inventory_edge_certificates.sh" \
   "${ROOT_DIR}/scripts/cf_inventory_zone_settings.sh" \
   "${ROOT_DIR}/scripts/cf_inventory_security_txt.sh" \
+  "${ROOT_DIR}/scripts/cf_mutate_sender_domain.sh" \
   "${ROOT_DIR}/scripts/cf_mutate_access_login_method.sh" \
   "${ROOT_DIR}/scripts/cf_mutate_email_routing_rule.sh" \
   "${ROOT_DIR}/scripts/cf_mutate_edge_certificate.sh" \
@@ -302,6 +303,7 @@ assert_jq_file "permission profile minimality policy" '
   and (.profiles["security-audit"].allowed_surfaces | index("zone.setting")) != null
   and (.permissions[] | select(.name == "Zone Settings Read" and .scope == "zone" and (.surfaces | index("zone.setting")) != null))
   and (.permissions[] | select(.name == "Zone Settings Write" and .scope == "zone" and (.profiles | index("hostname")) != null))
+  and (.permissions[] | select(.name == "Email Sending Write" and .scope == "zone" and (.surfaces | index("sender_domain")) != null and (.profiles | index("deploy")) != null))
   and (.profiles.deploy.allowed_surfaces | index("audit.log")) != null
   and (.profiles.deploy.allowed_surfaces | index("wrangler")) != null
   and .profiles["full-operator"].allowed_surfaces == ["*"]
@@ -720,10 +722,14 @@ assert_jq_file "surface module bindings" '
   and (.surfaces["maildesk-cf"].docs_topics | index("email-routing")) != null
   and .surfaces["sender_domain"].inventory_script == "scripts/cf_inventory_sender_domains.sh"
   and .surfaces["sender_domain"].permission_family == "Email Sending"
+  and .surfaces["sender_domain"].apply_script == "scripts/cf_mutate_sender_domain.sh"
   and .surfaces["sender_domain"].actions.list.required_selectors == ["zone"]
   and .surfaces["sender_domain"].actions.get.selectors_any_of == [["id"], ["name"]]
   and .surfaces["sender_domain"].actions.verify.selectors_any_of == [["id"], ["name"]]
-  and .surfaces["sender_domain"].actions.apply.supported == false
+  and .surfaces["sender_domain"].actions.apply.supported == true
+  and .surfaces["sender_domain"].actions.apply.preview_required == true
+  and .surfaces["sender_domain"].actions.apply.verification_required == true
+  and .surfaces["sender_domain"].actions.apply.operations.enable.required_selectors == ["zone", "name"]
   and .surfaces["worker.route"].module == "worker_route"
   and .surfaces["worker.route"].standards_ref == "worker.route"
   and (.surfaces["worker.route"].docs_topics | index("workers-routes")) != null