why my email link does not work?

[constantinesavva]

I am trying to put an email link on my email campaign message to offer option to unsubscribe. But, when I open a test email, although the link opens my email client when I click on the link, nevertheless the subject and content do not show. Any ideas what the problem can be fixed? thanks.
The link is like this:

mailto:[e-mail]?Subject=unsubscribe&Body=unsubscribe

[Birdman]

Hello,

This is a problem with your email client I believe. It works as it should in mine(Opera M2). What client do you use?

Birdman

[constantinesavva]

I use yahoo.