- [x] Collect error messages and send them via email
- [x] Check if directories are created successfully
- [x] ~~Check if the network drive already exists before connecting~~ ⇒ `New-PSDrive` throws an exception if drive is already connected
-- [ ] Create a log file for the script
-- [ ] Clean up the messages sent to the console or send them to the debug or error streams (e.g. `Write-Debug` or `Write-Error`)
-- [x] Suppress output of some commands
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+- [x] Create a log file for the script
+- [x] Clean up the messages sent to the console or send them to the debug or error streams (e.g. `Write-Debug` or `Write-Error`)
+- [x] Rotate log files
+- [x] Suppress output of some commands
+- [ ] Add some comments to the source code
+- [ ] Allow multiple backups for a day
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