Outlook Mail Analyzer

I’m working on a file that execute a SQL Request when the user goes in it, to know they clicked on the link.
I’m sending it to a lot of people of my company (they are all on Outlook).

However, in my db it’s saying they almost all clicked on it (no one did). I believe it’s something like a link analyzer from Outlook ?

Do you have an idea to fix it ?
A button to execute the sql request would fix it simply, but i really want it to be when they click on the link in the mail..