Send PDF attachments via GMAIL

I am trying to send email attachments through Endnote X7.

What must I do to be able to do this process in Gmail?  I am using chrome to access my email.

The E-mail PDF and E-mail Reference features are designed to work with MAPI based e-mail clients like Microsoft Outlook, Mozilla Thunderbird, or Apple Mail. At this time, the feature is not compatible with Google Mail (Gmail).

That’s too bad.  Thanks for the quick reply!