I'm trying to open an email window with 200+ emails this way...

Code:
window.open('mailto:'+allList+'');
'allList' contains: xxxxx@yyyy.com; xxxxxx1@yyyy.com; and ect....

When the list consists of a few emails it works, when the list is large, I get "The data area passed to a system call is too small" error.

I guess I can make a huge mailto hyperlink, but I think that would look horrible. If anybody has an idea please help me out.

Thanks for your time.