diff --git a/package-lock.json b/package-lock.json
index cc9cb33..9a5cd29 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -32,7 +32,7 @@
         "jasmine": "5.13.0",
         "jasmine-spec-reporter": "7.0.0",
         "madge": "5.0.1",
-        "mailgun.js": "3.5.9",
+        "mailgun.js": "12.3.0",
         "nyc": "17.1.0",
         "semantic-release": "25.0.2",
         "typescript": "5.9.3"
@@ -2684,17 +2684,6 @@
         "node": ">=10"
       }
     },
-    "node_modules/abort-controller": {
-      "version": "3.0.0",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "event-target-shim": "^5.0.0"
-      },
-      "engines": {
-        "node": ">=6.5"
-      }
-    },
     "node_modules/acorn": {
       "version": "7.4.1",
       "dev": true,
@@ -2883,6 +2872,18 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/axios": {
+      "version": "1.13.2",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-1.13.2.tgz",
+      "integrity": "sha512-VPk9ebNqPcy5lRGuSlKx752IlDatOjT9paPlm8A7yOuW2Fbvp4X3JznJtT4f0GzGLLiWE9W8onz51SqLYwzGaA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "follow-redirects": "^1.15.6",
+        "form-data": "^4.0.4",
+        "proxy-from-env": "^1.1.0"
+      }
+    },
     "node_modules/babel-eslint": {
       "version": "10.1.0",
       "dev": true,
@@ -3023,11 +3024,6 @@
         "node": ">= 6"
       }
     },
-    "node_modules/bluebird": {
-      "version": "3.7.2",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/bottleneck": {
       "version": "2.19.5",
       "resolved": "https://registry.npmjs.org/bottleneck/-/bottleneck-2.19.5.tgz",
@@ -3151,21 +3147,6 @@
         "node": ">= 0.4"
       }
     },
-    "node_modules/call-bound": {
-      "version": "1.0.4",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "call-bind-apply-helpers": "^1.0.2",
-        "get-intrinsic": "^1.3.0"
-      },
-      "engines": {
-        "node": ">= 0.4"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/ljharb"
-      }
-    },
     "node_modules/callsites": {
       "version": "3.1.0",
       "dev": true,
@@ -3389,19 +3370,6 @@
         "node": ">=0.8"
       }
     },
-    "node_modules/clone-deep": {
-      "version": "4.0.1",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "is-plain-object": "^2.0.4",
-        "kind-of": "^6.0.2",
-        "shallow-clone": "^3.0.0"
-      },
-      "engines": {
-        "node": ">=6"
-      }
-    },
     "node_modules/color-convert": {
       "version": "2.0.1",
       "dev": true,
@@ -3667,14 +3635,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/data-uri-to-buffer": {
-      "version": "3.0.1",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">= 6"
-      }
-    },
     "node_modules/debug": {
       "version": "4.4.3",
       "dev": true,
@@ -4481,14 +4441,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/event-target-shim": {
-      "version": "5.0.1",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=6"
-      }
-    },
     "node_modules/execa": {
       "version": "5.1.1",
       "dev": true,
@@ -4592,19 +4544,6 @@
         "reusify": "^1.0.4"
       }
     },
-    "node_modules/fetch-blob": {
-      "version": "2.1.2",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": "^10.17.0 || >=12.3.0"
-      },
-      "peerDependenciesMeta": {
-        "domexception": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/figures": {
       "version": "6.1.0",
       "dev": true,
@@ -4763,14 +4702,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/flat": {
-      "version": "5.0.2",
-      "dev": true,
-      "license": "BSD-3-Clause",
-      "bin": {
-        "flat": "cli.js"
-      }
-    },
     "node_modules/flat-cache": {
       "version": "3.2.0",
       "dev": true,
@@ -4794,6 +4725,27 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/follow-redirects": {
+      "version": "1.15.11",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.11.tgz",
+      "integrity": "sha512-deG2P0JfjrTxl50XGCDyfI97ZGVCxIpfKYmfyrQ54n5FO/0gfIES8C/Psl6kWVDolizcaaxZJnTS0QSMxvnsBQ==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "individual",
+          "url": "https://github.com/sponsors/RubenVerborgh"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=4.0"
+      },
+      "peerDependenciesMeta": {
+        "debug": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/foreground-child": {
       "version": "3.3.1",
       "dev": true,
@@ -5512,17 +5464,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/is-plain-object": {
-      "version": "2.0.4",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "isobject": "^3.0.1"
-      },
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
     "node_modules/is-regexp": {
       "version": "1.0.0",
       "dev": true,
@@ -5597,14 +5538,6 @@
       "dev": true,
       "license": "ISC"
     },
-    "node_modules/isobject": {
-      "version": "3.0.1",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
     "node_modules/issue-parser": {
       "version": "7.0.1",
       "dev": true,
@@ -5927,50 +5860,6 @@
         "json-buffer": "3.0.1"
       }
     },
-    "node_modules/kind-of": {
-      "version": "6.0.3",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
-    "node_modules/ky": {
-      "version": "0.25.1",
-      "dev": true,
-      "license": "MIT",
-      "peer": true,
-      "engines": {
-        "node": ">=10"
-      },
-      "funding": {
-        "url": "https://github.com/sindresorhus/ky?sponsor=1"
-      }
-    },
-    "node_modules/ky-universal": {
-      "version": "0.8.2",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "abort-controller": "^3.0.0",
-        "node-fetch": "3.0.0-beta.9"
-      },
-      "engines": {
-        "node": ">=10.17"
-      },
-      "funding": {
-        "url": "https://github.com/sindresorhus/ky-universal?sponsor=1"
-      },
-      "peerDependencies": {
-        "ky": ">=0.17.0",
-        "web-streams-polyfill": ">=2.0.0"
-      },
-      "peerDependenciesMeta": {
-        "web-streams-polyfill": {
-          "optional": true
-        }
-      }
-    },
     "node_modules/levn": {
       "version": "0.4.1",
       "dev": true,
@@ -6181,22 +6070,24 @@
       }
     },
     "node_modules/mailgun.js": {
-      "version": "3.5.9",
+      "version": "12.3.0",
+      "resolved": "https://registry.npmjs.org/mailgun.js/-/mailgun.js-12.3.0.tgz",
+      "integrity": "sha512-bBL6E8LwK657vDo0NRQAPFSrIbzjmwaAay9ixHQfFWMbxSHP4+anUXdei/oKj6zpSpt/hJZNqfTVGdVzZNSVdw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
+        "axios": "^1.12.1",
         "base-64": "^1.0.0",
-        "bluebird": "^3.7.2",
-        "ky": "^0.25.1",
-        "ky-universal": "^0.8.2",
-        "url": "^0.11.0",
-        "url-join": "0.0.1",
-        "web-streams-polyfill": "^3.0.1",
-        "webpack-merge": "^5.4.0"
+        "url-join": "^4.0.1"
+      },
+      "engines": {
+        "node": ">=18.0.0"
       }
     },
     "node_modules/mailgun.js/node_modules/url-join": {
-      "version": "0.0.1",
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/url-join/-/url-join-4.0.1.tgz",
+      "integrity": "sha512-jk1+QP6ZJqyOiuEI9AEWQfju/nB2Pw466kbA0LEZljHwKeMgd9WrAEgEGxjPDD2+TNbbb37rTyhEfrCXfuKXnA==",
       "dev": true,
       "license": "MIT"
     },
@@ -6508,22 +6399,6 @@
         "node": ">=18"
       }
     },
-    "node_modules/node-fetch": {
-      "version": "3.0.0-beta.9",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "data-uri-to-buffer": "^3.0.1",
-        "fetch-blob": "^2.1.1"
-      },
-      "engines": {
-        "node": "^10.17 || >=12.3"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/node-fetch"
-      }
-    },
     "node_modules/node-preload": {
       "version": "0.2.1",
       "dev": true,
@@ -9358,17 +9233,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/object-inspect": {
-      "version": "1.13.4",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">= 0.4"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/ljharb"
-      }
-    },
     "node_modules/once": {
       "version": "1.4.0",
       "dev": true,
@@ -9959,6 +9823,13 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/proxy-from-env": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/proxy-from-env/-/proxy-from-env-1.1.0.tgz",
+      "integrity": "sha512-D+zkORCbA9f1tdWRK0RaCR3GPv50cMxcrz4X8k5LTSUD1Dkw47mKJEZQNunItRTkWwgtaUSo1RVFRIG9ZXiFYg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/punycode": {
       "version": "2.3.1",
       "dev": true,
@@ -9967,20 +9838,6 @@
         "node": ">=6"
       }
     },
-    "node_modules/qs": {
-      "version": "6.14.0",
-      "dev": true,
-      "license": "BSD-3-Clause",
-      "dependencies": {
-        "side-channel": "^1.1.0"
-      },
-      "engines": {
-        "node": ">=0.6"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/ljharb"
-      }
-    },
     "node_modules/queue-microtask": {
       "version": "1.2.3",
       "dev": true,
@@ -13487,17 +13344,6 @@
       "dev": true,
       "license": "ISC"
     },
-    "node_modules/shallow-clone": {
-      "version": "3.0.1",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "kind-of": "^6.0.2"
-      },
-      "engines": {
-        "node": ">=8"
-      }
-    },
     "node_modules/shebang-command": {
       "version": "2.0.0",
       "dev": true,
@@ -13517,74 +13363,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/side-channel": {
-      "version": "1.1.0",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "es-errors": "^1.3.0",
-        "object-inspect": "^1.13.3",
-        "side-channel-list": "^1.0.0",
-        "side-channel-map": "^1.0.1",
-        "side-channel-weakmap": "^1.0.2"
-      },
-      "engines": {
-        "node": ">= 0.4"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/ljharb"
-      }
-    },
-    "node_modules/side-channel-list": {
-      "version": "1.0.0",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "es-errors": "^1.3.0",
-        "object-inspect": "^1.13.3"
-      },
-      "engines": {
-        "node": ">= 0.4"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/ljharb"
-      }
-    },
-    "node_modules/side-channel-map": {
-      "version": "1.0.1",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "call-bound": "^1.0.2",
-        "es-errors": "^1.3.0",
-        "get-intrinsic": "^1.2.5",
-        "object-inspect": "^1.13.3"
-      },
-      "engines": {
-        "node": ">= 0.4"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/ljharb"
-      }
-    },
-    "node_modules/side-channel-weakmap": {
-      "version": "1.0.2",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "call-bound": "^1.0.2",
-        "es-errors": "^1.3.0",
-        "get-intrinsic": "^1.2.5",
-        "object-inspect": "^1.13.3",
-        "side-channel-map": "^1.0.1"
-      },
-      "engines": {
-        "node": ">= 0.4"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/ljharb"
-      }
-    },
     "node_modules/signal-exit": {
       "version": "3.0.7",
       "dev": true,
@@ -14506,18 +14284,6 @@
         "punycode": "^2.1.0"
       }
     },
-    "node_modules/url": {
-      "version": "0.11.4",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "punycode": "^1.4.1",
-        "qs": "^6.12.3"
-      },
-      "engines": {
-        "node": ">= 0.4"
-      }
-    },
     "node_modules/url-join": {
       "version": "5.0.0",
       "dev": true,
@@ -14526,11 +14292,6 @@
         "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
       }
     },
-    "node_modules/url/node_modules/punycode": {
-      "version": "1.4.1",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/util-deprecate": {
       "version": "1.0.2",
       "dev": true,
@@ -14574,33 +14335,11 @@
         "defaults": "^1.0.3"
       }
     },
-    "node_modules/web-streams-polyfill": {
-      "version": "3.3.3",
-      "dev": true,
-      "license": "MIT",
-      "peer": true,
-      "engines": {
-        "node": ">= 8"
-      }
-    },
     "node_modules/web-worker": {
       "version": "1.2.0",
       "dev": true,
       "license": "Apache-2.0"
     },
-    "node_modules/webpack-merge": {
-      "version": "5.10.0",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "clone-deep": "^4.0.1",
-        "flat": "^5.0.2",
-        "wildcard": "^2.0.0"
-      },
-      "engines": {
-        "node": ">=10.0.0"
-      }
-    },
     "node_modules/which": {
       "version": "2.0.2",
       "dev": true,
@@ -14620,11 +14359,6 @@
       "dev": true,
       "license": "ISC"
     },
-    "node_modules/wildcard": {
-      "version": "2.0.1",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/word-wrap": {
       "version": "1.2.5",
       "dev": true,
diff --git a/package.json b/package.json
index fa005fe..e900282 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "jasmine": "5.13.0",
     "jasmine-spec-reporter": "7.0.0",
     "madge": "5.0.1",
-    "mailgun.js": "3.5.9",
+    "mailgun.js": "12.3.0",
     "nyc": "17.1.0",
     "semantic-release": "25.0.2",
     "typescript": "5.9.3"