diff --git a/package-lock.json b/package-lock.json
index e3d7053..bd2bc5b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -716,6 +716,7 @@
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.4.tgz",
       "integrity": "sha1-u13KOCu5TwXhUZQ3PRb9O6HKEQ0=",
+      "optional": true,
       "requires": {
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         "readable-stream": "2.3.4"
@@ -1713,7 +1714,8 @@
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       "resolved": "https://registry.npmjs.org/buffer-more-ints/-/buffer-more-ints-0.0.2.tgz",
       "integrity": "sha1-JrOIXRD6E9t/wBquOquHAZngEkw=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "buffer-xor": {
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@@ -2412,7 +2414,8 @@
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       "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
-      "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4="
+      "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
+      "optional": true
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     "constants-browserify": {
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@@ -2998,7 +3001,8 @@
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       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
-      "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o="
+      "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=",
+      "optional": true
     },
     "denodeify": {
       "version": "1.2.1",
@@ -4122,7 +4126,8 @@
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         "ansi-regex": {
           "version": "2.1.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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           "version": "1.1.1",
@@ -4165,7 +4170,8 @@
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         "balanced-match": {
           "version": "0.4.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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           "version": "1.0.1",
@@ -4178,6 +4184,7 @@
         "block-stream": {
           "version": "0.0.9",
           "bundled": true,
+          "optional": true,
           "requires": {
             "inherits": "2.0.3"
           }
@@ -4185,6 +4192,7 @@
         "boom": {
           "version": "2.10.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "hoek": "2.16.3"
           }
@@ -4192,6 +4200,7 @@
         "brace-expansion": {
           "version": "1.1.7",
           "bundled": true,
+          "optional": true,
           "requires": {
             "balanced-match": "0.4.2",
             "concat-map": "0.0.1"
@@ -4199,7 +4208,8 @@
         },
         "buffer-shims": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "caseless": {
           "version": "0.12.0",
@@ -4213,30 +4223,36 @@
         },
         "code-point-at": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "combined-stream": {
           "version": "1.0.5",
           "bundled": true,
+          "optional": true,
           "requires": {
             "delayed-stream": "1.0.0"
           }
         },
         "concat-map": {
           "version": "0.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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         "core-util-is": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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         "cryptiles": {
           "version": "2.0.5",
           "bundled": true,
+          "optional": true,
           "requires": {
             "boom": "2.10.1"
           }
@@ -4271,7 +4287,8 @@
         },
         "delayed-stream": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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           "version": "1.0.0",
@@ -4298,7 +4315,8 @@
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         "extsprintf": {
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-          "bundled": true
+          "bundled": true,
+          "optional": true
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@@ -4317,11 +4335,13 @@
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         "fs.realpath": {
           "version": "1.0.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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         "fstream": {
           "version": "1.0.11",
           "bundled": true,
+          "optional": true,
           "requires": {
             "graceful-fs": "4.1.11",
             "inherits": "2.0.3",
@@ -4372,6 +4392,7 @@
         "glob": {
           "version": "7.1.2",
           "bundled": true,
+          "optional": true,
           "requires": {
             "fs.realpath": "1.0.0",
             "inflight": "1.0.6",
@@ -4383,7 +4404,8 @@
         },
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           "version": "4.1.11",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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           "version": "1.0.5",
@@ -4407,6 +4429,7 @@
         "hawk": {
           "version": "3.1.3",
           "bundled": true,
+          "optional": true,
           "requires": {
             "boom": "2.10.1",
             "cryptiles": "2.0.5",
@@ -4416,7 +4439,8 @@
         },
         "hoek": {
           "version": "2.16.3",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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           "version": "1.1.1",
@@ -4431,6 +4455,7 @@
         "inflight": {
           "version": "1.0.6",
           "bundled": true,
+          "optional": true,
           "requires": {
             "once": "1.4.0",
             "wrappy": "1.0.2"
@@ -4438,7 +4463,8 @@
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         "inherits": {
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+          "bundled": true,
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@@ -4448,6 +4474,7 @@
         "is-fullwidth-code-point": {
           "version": "1.0.0",
           "bundled": true,
+          "optional": true,
           "requires": {
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@@ -4459,7 +4486,8 @@
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         "isarray": {
           "version": "1.0.0",
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+          "bundled": true,
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@@ -4522,11 +4550,13 @@
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         "mime-db": {
           "version": "1.27.0",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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         "mime-types": {
           "version": "2.1.15",
           "bundled": true,
+          "optional": true,
           "requires": {
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           }
@@ -4534,17 +4564,20 @@
         "minimatch": {
           "version": "3.0.4",
           "bundled": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "1.1.7"
           }
         },
         "minimist": {
           "version": "0.0.8",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
+          "optional": true,
           "requires": {
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           }
@@ -4594,7 +4627,8 @@
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         "number-is-nan": {
           "version": "1.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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           "version": "0.8.2",
@@ -4609,6 +4643,7 @@
         "once": {
           "version": "1.4.0",
           "bundled": true,
+          "optional": true,
           "requires": {
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           }
@@ -4634,7 +4669,8 @@
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         "path-is-absolute": {
           "version": "1.0.1",
-          "bundled": true
+          "bundled": true,
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@@ -4643,7 +4679,8 @@
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         "process-nextick-args": {
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+          "bundled": true,
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@@ -4676,6 +4713,7 @@
         "readable-stream": {
           "version": "2.2.9",
           "bundled": true,
+          "optional": true,
           "requires": {
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@@ -4718,13 +4756,15 @@
         "rimraf": {
           "version": "2.6.1",
           "bundled": true,
+          "optional": true,
           "requires": {
             "glob": "7.1.2"
           }
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         "safe-buffer": {
           "version": "5.0.1",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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@@ -4744,6 +4784,7 @@
         "sntp": {
           "version": "1.0.9",
           "bundled": true,
+          "optional": true,
           "requires": {
             "hoek": "2.16.3"
           }
@@ -4774,6 +4815,7 @@
         "string-width": {
           "version": "1.0.2",
           "bundled": true,
+          "optional": true,
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@@ -4783,6 +4825,7 @@
         "string_decoder": {
           "version": "1.0.1",
           "bundled": true,
+          "optional": true,
           "requires": {
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           }
@@ -4795,6 +4838,7 @@
         "strip-ansi": {
           "version": "3.0.1",
           "bundled": true,
+          "optional": true,
           "requires": {
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@@ -4807,6 +4851,7 @@
         "tar": {
           "version": "2.2.1",
           "bundled": true,
+          "optional": true,
           "requires": {
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             "fstream": "1.0.11",
@@ -4856,7 +4901,8 @@
         },
         "util-deprecate": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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           "version": "3.0.1",
@@ -4881,7 +4927,8 @@
         },
         "wrappy": {
           "version": "1.0.2",
-          "bundled": true
+          "bundled": true,
+          "optional": true
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@@ -4889,6 +4936,7 @@
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       "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.11.tgz",
       "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
+      "optional": true,
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@@ -4945,6 +4993,7 @@
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       "resolved": "https://registry.npmjs.org/gauge/-/gauge-2.7.4.tgz",
       "integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
+      "optional": true,
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@@ -5289,7 +5338,8 @@
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       "resolved": "https://registry.npmjs.org/has-unicode/-/has-unicode-2.0.1.tgz",
-      "integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk="
+      "integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk=",
+      "optional": true
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     "has-value": {
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@@ -5564,6 +5614,7 @@
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       "integrity": "sha1-zBzjjkU7+YSg93AtLdWcc9CBKEo=",
       "dev": true,
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@@ -5611,6 +5662,7 @@
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       "integrity": "sha1-rQFScUOi6Hc8+uapb1hla7UqNLI=",
       "dev": true,
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@@ -5620,7 +5672,8 @@
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-      "dev": true
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@@ -6747,13 +6800,15 @@
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       "integrity": "sha1-YjUag5VjrF/1vSbxL2Dpgwu3UeY=",
-      "dev": true
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       "integrity": "sha1-UaGp50SOy9Ms2lRCFnW7IbwJPaY=",
       "dev": true,
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@@ -6764,7 +6819,8 @@
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           "integrity": "sha1-/iZaIYrGpXz+hUkn6dBMGYJe3es=",
-          "dev": true
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@@ -6772,7 +6828,8 @@
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-      "dev": true
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@@ -7766,7 +7823,8 @@
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+          "integrity": "sha512-QLg82fGkfnJ/4iy1xZ81/9SIJiq1NGFUMGs6ParyjBZr6jW2Ufj/snDqTHixNlHdPNwN2RLVD0Pi3igeK9+JfA==",
+          "optional": true
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@@ -7960,7 +8018,8 @@
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-          "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4="
+          "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
+          "optional": true
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@@ -7972,6 +8031,7 @@
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           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
+          "optional": true,
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@@ -8029,7 +8089,8 @@
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-          "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc="
+          "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
+          "optional": true
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@@ -8040,9 +8101,9 @@
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-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-4.6.5.tgz",
-      "integrity": "sha512-+bt+BgmnOXDz1uIaWXfXuTESth8UHkhtu7+X8+X2W+CHAn0AuuCyCk854qnathYQLWEC2jkpx7/pkVHcfmLKDw=="
+      "version": "6.4.16",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.16.tgz",
+      "integrity": "sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ=="
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@@ -8059,13 +8120,15 @@
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       "integrity": "sha1-ecSQihwPXzdbc/6IjamCj23JY6Q=",
-      "dev": true
+      "dev": true,
+      "optional": true
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       "integrity": "sha1-z1mU4v0mjQD1zw+nZ6CBae2wfsA=",
       "dev": true,
+      "optional": true,
       "requires": {
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@@ -8098,7 +8161,8 @@
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       "integrity": "sha1-WG24EB2zDLRDjrVGc3pBqtDPE9U=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -8504,6 +8568,7 @@
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+      "optional": true,
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@@ -9444,7 +9509,8 @@
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       "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -10423,6 +10489,7 @@
       "dependencies": {
         "buble": {
           "version": "github:pemrouz/buble#4e639aeeb64712ac95dc30a52750d1ee4432c9c8",
+          "from": "github:pemrouz/buble#4e639aeeb64712ac95dc30a52750d1ee4432c9c8",
           "requires": {
             "acorn": "5.4.1",
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@@ -10857,13 +10924,15 @@
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       "integrity": "sha1-fxFLW2X6s+KjWqd1uxLw0cZJvxY=",
-      "dev": true
+      "dev": true,
+      "optional": true
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       "integrity": "sha1-1275EnyyPCJZ7bHoNJwujV4tdME=",
       "dev": true,
+      "optional": true,
       "requires": {
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@@ -11100,6 +11169,7 @@
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       "integrity": "sha1-W4t/x8jzQcU+0FbpKbe/Tei6e1o=",
       "dev": true,
+      "optional": true,
       "requires": {
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         "smart-buffer": "1.1.15"
@@ -11110,6 +11180,7 @@
       "resolved": "https://registry.npmjs.org/socks-proxy-agent/-/socks-proxy-agent-2.1.1.tgz",
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       "dev": true,
+      "optional": true,
       "requires": {
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         "extend": "3.0.1",
@@ -12078,6 +12149,7 @@
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
       "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
       "dev": true,
+      "optional": true,
       "requires": {
         "prelude-ls": "1.1.2"
       }
@@ -12196,7 +12268,8 @@
       "version": "1.7.0",
       "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.7.0.tgz",
       "integrity": "sha1-a7rwh3UA02vjTsqlhODbn+8DUgk=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "underscore.string": {
       "version": "3.3.4",
@@ -13586,6 +13659,7 @@
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.2.tgz",
       "integrity": "sha512-ijDLlyQ7s6x1JgCLur53osjm/UXUYD9+0PbYKrBsYisYXzCxN+HC3mYDNy/dWdmf3AwqwU3CXwDCvsNgGK1S0w==",
+      "optional": true,
       "requires": {
         "string-width": "1.0.2"
       }
diff --git a/package.json b/package.json
index a4fdac2..728df96 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "ng2-dnd": "^5.0.2",
     "ngx-clipboard": "^10.0.0",
     "ngx-highlightjs": "^1.4.1",
-    "nodemailer": "^4.6.5",
+    "nodemailer": "^6.4.16",
     "popper": "^1.0.1",
     "rxjs": "^5.5.6",
     "tether": "1.4.0",