:local ActualChannel "";
 :local ActualCurrentVersion "";
 :local ActualLatestVersion "";
 /system package update check-for-updates  do={
 :set $ActualChannel $"channel";
 :set $ActualCurrentVersion $"current-version";
 :set $ActualLatestVersion  $"latest-version";
 }
 :local DataFile "SoftChecker.txt";
 :if ([:len [/file find name=$DataFile]] = 0) do={ 
 /file print file=$DataFile;
 :delay 3s;
 /file set $DataFile contents="";
 :delay 2s;
 }
 :local OldSoftwareVersion [/file get $DataFile contents];
 :delay 2s;
 :if ($ActualLatestVersion != $OldSoftwareVersion) do={ 
 /file set $DataFile contents=$ActualLatestVersion;
 :delay 2s;
 /tool e-mail send to="adres_docelowy@change.me" subject="A new version of RouterOS $ActualLatestVersion is available for the $[/system identity get name] device" body="Channel: $ActualChannel\r\nActual version: $ActualCurrentVersion\r\nNew version: $ActualLatestVersion\r\nDate: $[/system clock get date] $[/system clock get time]"
 }