diff --git a/package-lock.json b/package-lock.json
index acb848b7..ac920959 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -28,11 +28,6 @@
                 }
             }
         },
-        "addressparser": {
-            "version": "1.0.1",
-            "resolved": "https://registry.npmjs.org/addressparser/-/addressparser-1.0.1.tgz",
-            "integrity": "sha1-R6++GiqSYhkdtoOOT9HTm0CCF0Y="
-        },
         "after": {
             "version": "0.8.2",
             "resolved": "https://registry.npmjs.org/after/-/after-0.8.2.tgz",
@@ -204,27 +199,6 @@
             "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
             "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A=="
         },
-        "buildmail": {
-            "version": "4.0.1",
-            "resolved": "https://registry.npmjs.org/buildmail/-/buildmail-4.0.1.tgz",
-            "integrity": "sha1-h393OLeHKYccmhBeO4N9K+EaenI=",
-            "requires": {
-                "addressparser": "1.0.1",
-                "libbase64": "0.1.0",
-                "libmime": "3.0.0",
-                "libqp": "1.1.0",
-                "nodemailer-fetch": "1.6.0",
-                "nodemailer-shared": "1.1.0",
-                "punycode": "1.4.1"
-            },
-            "dependencies": {
-                "punycode": {
-                    "version": "1.4.1",
-                    "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.4.1.tgz",
-                    "integrity": "sha1-wNWmOycYgArY4esPpSachN1BhF4="
-                }
-            }
-        },
         "callsite": {
             "version": "1.0.0",
             "resolved": "https://registry.npmjs.org/callsite/-/callsite-1.0.0.tgz",
@@ -657,25 +631,6 @@
                 "sshpk": "^1.7.0"
             }
         },
-        "httpntlm": {
-            "version": "1.6.1",
-            "resolved": "https://registry.npmjs.org/httpntlm/-/httpntlm-1.6.1.tgz",
-            "integrity": "sha1-rQFScUOi6Hc8+uapb1hla7UqNLI=",
-            "requires": {
-                "httpreq": ">=0.4.22",
-                "underscore": "~1.7.0"
-            }
-        },
-        "httpreq": {
-            "version": "0.4.24",
-            "resolved": "https://registry.npmjs.org/httpreq/-/httpreq-0.4.24.tgz",
-            "integrity": "sha1-QzX/2CzZaWaKOUZckprGHWOTYn8="
-        },
-        "iconv-lite": {
-            "version": "0.4.15",
-            "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.15.tgz",
-            "integrity": "sha1-/iZaIYrGpXz+hUkn6dBMGYJe3es="
-        },
         "indexof": {
             "version": "0.0.1",
             "resolved": "https://registry.npmjs.org/indexof/-/indexof-0.0.1.tgz",
@@ -691,11 +646,6 @@
             "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
             "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
         },
-        "ip": {
-            "version": "1.1.5",
-            "resolved": "https://registry.npmjs.org/ip/-/ip-1.1.5.tgz",
-            "integrity": "sha1-vd7XARQpCCjAoDnnLvJfWq7ENUo="
-        },
         "is-callable": {
             "version": "1.1.5",
             "resolved": "https://registry.npmjs.org/is-callable/-/is-callable-1.1.5.tgz",
@@ -773,26 +723,6 @@
                 "verror": "1.10.0"
             }
         },
-        "libbase64": {
-            "version": "0.1.0",
-            "resolved": "https://registry.npmjs.org/libbase64/-/libbase64-0.1.0.tgz",
-            "integrity": "sha1-YjUag5VjrF/1vSbxL2Dpgwu3UeY="
-        },
-        "libmime": {
-            "version": "3.0.0",
-            "resolved": "https://registry.npmjs.org/libmime/-/libmime-3.0.0.tgz",
-            "integrity": "sha1-UaGp50SOy9Ms2lRCFnW7IbwJPaY=",
-            "requires": {
-                "iconv-lite": "0.4.15",
-                "libbase64": "0.1.0",
-                "libqp": "1.1.0"
-            }
-        },
-        "libqp": {
-            "version": "1.1.0",
-            "resolved": "https://registry.npmjs.org/libqp/-/libqp-1.1.0.tgz",
-            "integrity": "sha1-9ebgatdLeU+1tbZpiL9yjvHe2+g="
-        },
         "lodash": {
             "version": "4.17.15",
             "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
@@ -1061,15 +991,6 @@
                 "es5-ext": "~0.10.2"
             }
         },
-        "mailcomposer": {
-            "version": "4.0.1",
-            "resolved": "https://registry.npmjs.org/mailcomposer/-/mailcomposer-4.0.1.tgz",
-            "integrity": "sha1-DhxEsqB890DuF9wUm6AJ8Zyt/rQ=",
-            "requires": {
-                "buildmail": "4.0.1",
-                "libmime": "3.0.0"
-            }
-        },
         "mailgun.js": {
             "version": "2.0.1",
             "resolved": "https://registry.npmjs.org/mailgun.js/-/mailgun.js-2.0.1.tgz",
@@ -1170,71 +1091,15 @@
             }
         },
         "nodemailer": {
-            "version": "2.7.2",
-            "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-2.7.2.tgz",
-            "integrity": "sha1-8kLmSa7q45tsftdA73sGHEBNMPk=",
-            "requires": {
-                "libmime": "3.0.0",
-                "mailcomposer": "4.0.1",
-                "nodemailer-direct-transport": "3.3.2",
-                "nodemailer-shared": "1.1.0",
-                "nodemailer-smtp-pool": "2.8.2",
-                "nodemailer-smtp-transport": "2.7.2",
-                "socks": "1.1.9"
-            }
-        },
-        "nodemailer-direct-transport": {
-            "version": "3.3.2",
-            "resolved": "https://registry.npmjs.org/nodemailer-direct-transport/-/nodemailer-direct-transport-3.3.2.tgz",
-            "integrity": "sha1-6W+vuQNYVglH5WkBfZfmBzilCoY=",
-            "requires": {
-                "nodemailer-shared": "1.1.0",
-                "smtp-connection": "2.12.0"
-            }
-        },
-        "nodemailer-fetch": {
-            "version": "1.6.0",
-            "resolved": "https://registry.npmjs.org/nodemailer-fetch/-/nodemailer-fetch-1.6.0.tgz",
-            "integrity": "sha1-ecSQihwPXzdbc/6IjamCj23JY6Q="
+            "version": "6.4.16",
+            "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.16.tgz",
+            "integrity": "sha512-68K0LgZ6hmZ7PVmwL78gzNdjpj5viqBdFqKrTtr9bZbJYj6BRj5W6WGkxXrEnUl3Co3CBXi3CZBUlpV/foGnOQ=="
         },
         "nodemailer-sendmail-transport": {
             "version": "1.0.2",
             "resolved": "https://registry.npmjs.org/nodemailer-sendmail-transport/-/nodemailer-sendmail-transport-1.0.2.tgz",
             "integrity": "sha1-9VkbEau2jSiv6KsEp2rfjtpd3i4="
         },
-        "nodemailer-shared": {
-            "version": "1.1.0",
-            "resolved": "https://registry.npmjs.org/nodemailer-shared/-/nodemailer-shared-1.1.0.tgz",
-            "integrity": "sha1-z1mU4v0mjQD1zw+nZ6CBae2wfsA=",
-            "requires": {
-                "nodemailer-fetch": "1.6.0"
-            }
-        },
-        "nodemailer-smtp-pool": {
-            "version": "2.8.2",
-            "resolved": "https://registry.npmjs.org/nodemailer-smtp-pool/-/nodemailer-smtp-pool-2.8.2.tgz",
-            "integrity": "sha1-LrlNbPhXgLG0clzoU7nL1ejajHI=",
-            "requires": {
-                "nodemailer-shared": "1.1.0",
-                "nodemailer-wellknown": "0.1.10",
-                "smtp-connection": "2.12.0"
-            }
-        },
-        "nodemailer-smtp-transport": {
-            "version": "2.7.2",
-            "resolved": "https://registry.npmjs.org/nodemailer-smtp-transport/-/nodemailer-smtp-transport-2.7.2.tgz",
-            "integrity": "sha1-A9ccdjFPFKx9vHvwM6am0W1n+3c=",
-            "requires": {
-                "nodemailer-shared": "1.1.0",
-                "nodemailer-wellknown": "0.1.10",
-                "smtp-connection": "2.12.0"
-            }
-        },
-        "nodemailer-wellknown": {
-            "version": "0.1.10",
-            "resolved": "https://registry.npmjs.org/nodemailer-wellknown/-/nodemailer-wellknown-0.1.10.tgz",
-            "integrity": "sha1-WG24EB2zDLRDjrVGc3pBqtDPE9U="
-        },
         "oauth-sign": {
             "version": "0.9.0",
             "resolved": "https://registry.npmjs.org/oauth-sign/-/oauth-sign-0.9.0.tgz",
@@ -1481,20 +1346,6 @@
             "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
             "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
         },
-        "smart-buffer": {
-            "version": "1.1.15",
-            "resolved": "https://registry.npmjs.org/smart-buffer/-/smart-buffer-1.1.15.tgz",
-            "integrity": "sha1-fxFLW2X6s+KjWqd1uxLw0cZJvxY="
-        },
-        "smtp-connection": {
-            "version": "2.12.0",
-            "resolved": "https://registry.npmjs.org/smtp-connection/-/smtp-connection-2.12.0.tgz",
-            "integrity": "sha1-1275EnyyPCJZ7bHoNJwujV4tdME=",
-            "requires": {
-                "httpntlm": "1.6.1",
-                "nodemailer-shared": "1.1.0"
-            }
-        },
         "socket.io": {
             "version": "2.3.0",
             "resolved": "https://registry.npmjs.org/socket.io/-/socket.io-2.3.0.tgz",
@@ -1609,15 +1460,6 @@
                 }
             }
         },
-        "socks": {
-            "version": "1.1.9",
-            "resolved": "https://registry.npmjs.org/socks/-/socks-1.1.9.tgz",
-            "integrity": "sha1-Yo1+TQSRJDVEWsC25Fk3bLPm1pE=",
-            "requires": {
-                "ip": "^1.1.2",
-                "smart-buffer": "^1.0.4"
-            }
-        },
         "sshpk": {
             "version": "1.16.1",
             "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.16.1.tgz",
@@ -1733,11 +1575,6 @@
             "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
             "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
         },
-        "underscore": {
-            "version": "1.7.0",
-            "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.7.0.tgz",
-            "integrity": "sha1-a7rwh3UA02vjTsqlhODbn+8DUgk="
-        },
         "uri-js": {
             "version": "4.2.2",
             "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
diff --git a/package.json b/package.json
index ea063232..1d7a5a14 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
         "dateformat": "*",
         "mailgun.js": "*",
         "node-telegram-bot-api": "^0.40.0",
-        "nodemailer": "2.7.2",
+        "nodemailer": "6.4.16",
         "nodemailer-sendmail-transport": "*",
         "redis": "^3.0.2",
         "socket.io": "^2.3.0",