Default mail client
As in windows, a default mail client can be registered with the OS, does something similar exist in Linux?
The default behavior for "mailto:" links in Linux seems to be browser-specific.
I am writing a software, in which I want to have the functionality that the user can send the currently open file by email to another person. But, since there's no default mail client, will I have to support only a pre-decided mail clients? In that case, can someone please suggest which ones should be supported, i.e. which are the most common ones?