Merge pull request #344 from leiweibau/next_update

Next update

README.md

@@ -55,8 +55,8 @@ The backend is started at regular intervals via cronjobs of the user who install
 
 The system scans the network to detect connected devices using various scanning methods as described above. 
 It also verifies the accessibility of web services and notifies about any changes in SSL certificates. 
-The gathered information is stored in the database. Detected changes are reported via email and/or other services 
-such as [Pushsafer](https://www.pushsafer.com/), [Pushover](https://pushover.net/), ntfy and Telegram through [shoutrrr](docs/SHOUTRRR.md), as well as to the Frontend. Automated 
+The gathered information is stored in the database. Detected changes are reported via mail ([Guide](docs/NOTIFICATION_MAIL.md)) and/or other services 
+such as [Pushsafer](https://www.pushsafer.com/), [Pushover](https://pushover.net/), ntfy and Telegram through shoutrrr ([Guide](docs/NOTIFICATION_SHOUTRRR.md)), as well as to the Frontend. Automated 
 tasks for cleaning up and optionally backing up the database are also performed. Additionally, optional speed tests of the Internet 
 connection can be conducted. Users can utilize the [pialert-cli](docs/PIALERTCLI.md) tool to configure login, password, and other 
 settings conveniently.

docs/NOTIFICATION_MAIL.md

@@ -0,0 +1,34 @@
+## Configure Mail Notification
+
+During the setup, you have the opportunity to configure the mail. Pi.Alert does not use this
+configuration by default, as only the notification via the web interface is activated after installation. 
+the installation is activated.
+
+Screenshot Status Box
+![Mail deactivated][status_box_no_mail]
+
+To change this, you can open the Config File Editor under Settings, at the bottom of the page, and under
+“Mail Reporting” the entries `REPORT_MAIL`, and if you want to use the Web Service Monitoring, 
+set `REPORT_MAIL_WEBMON` from `False` to `True`. After saving, the status box should now look like this.
+
+| ![Config File Editor][config_file_editor] | ![Mail activated][status_box_mail] |
+| ----------------------------------------- | ---------------------------------- |
+
+To check whether the configuration is successful, you can click on the “Test Notifications” button. A message will 
+now be sent via all activated notification services. If no notification arrives by email, additional configuration 
+may be necessary in the relevant mail account. Services (Gmail, iCloud, Outlook) that work with 2FA authentication 
+usually use specific “app passwords” to allow services to access the mailbox. Here it is now necessary 
+configure a corresponding app password for Pi.Alert.
+
+[Gmail Support Document](https://support.google.com/accounts/answer/185833?p=InvalidSecondFactor)
+
+[iCloud Support Document](https://support.apple.com/en-us/102654)
+
+[Outlook Support Document](https://support.microsoft.com/en-us/account-billing/how-to-get-and-use-app-passwords-5896ed9b-4263-e681-128a-a6f2979a7944)
+
+[Back](https://github.com/leiweibau/Pi.Alert)
+
+<!--- --------------------------------------------------------------------- --->
+[status_box_no_mail]:  https://raw.githubusercontent.com/leiweibau/Pi.Alert/assets/notification_mail_01.png          "Mail deactivated"
+[config_file_editor]:  https://raw.githubusercontent.com/leiweibau/Pi.Alert/assets/notification_mail_02.png          "Config File Editor"
+[status_box_mail]:     https://raw.githubusercontent.com/leiweibau/Pi.Alert/assets/notification_mail_03.png          "Mail activated"