When i use the mail me function i cannot fill in another emailaddress to send the file to.

I eneabled the mialing functions and selected the 'free text email list'. But there is no way to fill in an emailaddress when hitting the mail me button.

How to solve this?

There are two separate functions: "Mail Me" (the oldest) and "Mail". The latter has more security implications so it needs to be switched on in the main options and the right users must be set permissions to use this. Then it should become available on the (context) menu for files.