Let's not give the test account credentials to everyone. Also, it's --username, not --user, and I'd put --password in a separate line.
This looks like out of place.
It's not only a directory.
Should be "--timezone", I guess.
The other two scripts use python3, it would be nice to be consistent. Also, scripts in extras/ directory use /usr/bin/python
The number should be an argument to the script.
It is --username. Or it is automatically recognized as --user too?
There's also --imap option.