diff --git a/.github/plugin/marketplace.json b/.github/plugin/marketplace.json
index 664057878b..f87ce7557b 100644
--- a/.github/plugin/marketplace.json
+++ b/.github/plugin/marketplace.json
@@ -1785,6 +1785,32 @@
         "sha": "e10cd19c000651620453e99ed138b8f012d069c7"
       }
     },
+    {
+      "name": "nitrosend",
+      "description": "Prepare and review email campaigns, automation flows, contacts and transactional messages in Nitrosend through its hosted OAuth MCP server. Includes a scoped skill for account selection, consent and live-send review.",
+      "version": "0.1.0",
+      "author": {
+        "name": "Nitrosend",
+        "url": "https://nitrosend.com"
+      },
+      "repository": "https://github.com/nitrosend/copilot",
+      "homepage": "https://nitrosend.com",
+      "license": "MIT",
+      "keywords": [
+        "nitrosend",
+        "email-marketing",
+        "campaigns",
+        "automation",
+        "transactional-email",
+        "mcp",
+        "oauth"
+      ],
+      "source": {
+        "source": "github",
+        "repo": "nitrosend/copilot",
+        "sha": "9790c695cec6c36673927071f5913d0ae9bc0a8d"
+      }
+    },
     {
       "name": "noob-mode",
       "source": "plugins/noob-mode",
diff --git a/plugins/external.json b/plugins/external.json
index bd27caa608..ae7c5e5011 100644
--- a/plugins/external.json
+++ b/plugins/external.json
@@ -1427,6 +1427,32 @@
       "sha": "e10cd19c000651620453e99ed138b8f012d069c7"
     }
   },
+  {
+    "name": "nitrosend",
+    "description": "Prepare and review email campaigns, automation flows, contacts and transactional messages in Nitrosend through its hosted OAuth MCP server. Includes a scoped skill for account selection, consent and live-send review.",
+    "version": "0.1.0",
+    "author": {
+      "name": "Nitrosend",
+      "url": "https://nitrosend.com"
+    },
+    "repository": "https://github.com/nitrosend/copilot",
+    "homepage": "https://nitrosend.com",
+    "license": "MIT",
+    "keywords": [
+      "nitrosend",
+      "email-marketing",
+      "campaigns",
+      "automation",
+      "transactional-email",
+      "mcp",
+      "oauth"
+    ],
+    "source": {
+      "source": "github",
+      "repo": "nitrosend/copilot",
+      "sha": "9790c695cec6c36673927071f5913d0ae9bc0a8d"
+    }
+  },
   {
     "name": "orrery",
     "description": "Architecture and system design diagrams with official AWS, Azure, Google Cloud, Kubernetes and GitHub icons, auto-laid out by ELK and rendered from a YAML spec to SVG, PNG, editable draw.io, React TSX and a standalone HTML viewer.",