This plugin redirects the user, just after he has logged, to the URL defined in settings. If the redirect url is not defined (default), the behaviour is as usual(My Page).
git clone https://github.com/undx/redmine_redirect_to_after_login.git redirect_to_after_login
Please note that plugin must be named redirect_to_after_login.
Restart Redmine's server.
Go to Administration > Plugins > Configure to set the URL.
Enter the relative URL beginning with a slash (/landing-page) or the absolute, FQDN URL (http://www.example.com/landing-page)