Updated Troubleshooting Mail (markdown)

Troubleshooting-Mail.md

@@ -1,4 +1,36 @@
-If you can't get your email server working with smtp/stmps or MAIL_SERVICE, look is there more config options for your email server at https://nodemailer.com docs, and add new issue about your email server to https://github.com/wekan/wekan/issues . Thanks!
+If you can't get your email server working with smtp/stmps or MAIL_SERVICE, look is there more config options for your email server at https://nodemailer.com docs, and add new issue about your email server to https://github.com/wekan/wekan/issues or [pull request](https://github.com/wekan/wekan/wiki/Emoji#how-you-could-add-another-plugin).
+
+For example, for https://nodemailer.com/smtp/ 
+
+1) Install node.js 12.22.6
+2) Add to top of code example: `var nodemailer = require('nodemailer');`
+3) Install nodemailer: `npm install nodemailer`
+4) send email: `node email.js`
+
+For example, this kind of code uses similar like MAIL_SERVICE in Wekan:
+
+```
+var nodemailer = require('nodemailer');
+
+let transporter = nodemailer.createTransport({
+  service: "Outlook365",
+  auth: {
+    user: 'firstname.lastname@hotmail.com',
+    pass: 'TopSecret'
+  },
+})
+
+let info = transporter.sendMail({
+  from: 'Firstname Lastname <firstname.lastname@hotmail.com>',
+  to: 'somebody@example.com',
+  subject: 'Hi',
+  text: 'Hi. Reminder: Meeting tomorrow.',
+  html: '<h1>Hi. Reminder: Meeting tomorrow.</h1>'
+})
+```
+
+
+If with some code example sending email works, xet7 can add it to wekan, like in [Wekan v5.52](https://github.com/wekan/wekan/blob/master/CHANGELOG.md#v552-2021-08-26-wekan-release) xet7 added direct nodemailer usage for MAIL_SERVICE.
 
 ## MAIL_SERVICE