Not able to install

Can you please make sure there are properly recursively rights are sets for the folders as mentioned in:

https://community.mailcarry.com/viewtopic.php?id=22

and please make sure mode_rewrite is enabled

Sounds good! if you installed the MailCarry successfully!

1: There is no auto-update, and for the update, you will need to update your MailCarry manually by clicking "Update" button under "Tools => Update"

Furthermore, you can view the errors in your browser console, and the common error "not overwriting the files", and it normally happens when folders/files have not proper permissions.

2: Currently there is an ACL on module/page level, and it only checks when someone tries to call the page, but we have a plan to give an option to user to hide the sidebar menu as well, it will definitely increase the loading time of the pages due to sidebar menu check on each request.