add helper to generate email; install html-to-text package

package-lock.json

@@ -2077,6 +2077,29 @@
         }
       }
     },
+    "he": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/he/-/he-1.2.0.tgz",
+      "integrity": "sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw=="
+    },
+    "html-to-text": {
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/html-to-text/-/html-to-text-5.1.1.tgz",
+      "integrity": "sha512-Bci6bD/JIfZSvG4s0gW/9mMKwBRoe/1RWLxUME/d6WUSZCdY7T60bssf/jFf7EYXRyqU4P5xdClVqiYU0/ypdA==",
+      "requires": {
+        "he": "^1.2.0",
+        "htmlparser2": "^3.10.1",
+        "lodash": "^4.17.11",
+        "minimist": "^1.2.0"
+      },
+      "dependencies": {
+        "minimist": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ="
+        }
+      }
+    },
     "htmlparser2": {
       "version": "3.10.1",
       "resolved": "https://registry.npmjs.org/htmlparser2/-/htmlparser2-3.10.1.tgz",