Created the mail util

src/utils/email.ts

@@ -0,0 +1,19 @@
+import { createTransport, SentMessageInfo } from "nodemailer";
+import { Options } from "nodemailer/lib/mailer";
+import * as process from "process";
+
+const transport = createTransport({
+    service: process.env.MAIL_SERVICE || "gmail",
+    auth: {
+        user: process.env.MAIL_USER || "noreply@licenseapi.de",
+        pass: process.env.MAIL_PASS,
+    },
+});
+
+export const sendMail = (options: Options, success?: (info: SentMessageInfo) => void, error?: (msg: Error) => void) => transport.sendMail({
+    ...options, from: process.env.USER || "noreply@licenseapi.de",
+}, (err, info) => {
+    if (err !== null && error) return error(err);
+
+    if (success) success(info);
+});