How can I track the hits to a link?


My school gives us a certain amount of bandwidth to use as we please, so I upload the (pdf) newsletter I do for work every month and send the link out in an email to everyone at work. My question is, how can I track the amount of hits I’m getting to the link?
I would like to have that information when I go to ask my boss to buy me a software program that would help me build and design the newsletter in an easier way.

Thanks for any help

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