I send a lot of event emails and have not found an easy way to create a link to download a calendar file.

The last test I did (here: http://t.co/8VLRlVlRnQ), I had to upload a .ics file to a server and then add a bunch of script to it (and it still didn't work on mobile). My event platform doesn't offer any options for creating this link. Any ideas on an easy way to populate a calendar event (needs to work for Outlook)?