Possibility to set "open inbox when login" automatically

I particularly like the webmail home page.

However, with my clients this has been a problem.

As my company is Brazilian, most of the clients do not speak / read English.

As much as it is very intuitive for us to check "Open my inbox when I log in"

It does not seem to be a simple task for them.

Because we always have to give "support" and check this box for users manually.

As this behavior is not like setting the default mailbox, which changes nvdata files

And I can't find what changes when I check that option.