Also check if MultilineInput's Email's Value have any links or images in it. That one you’re seeing isn’t probably the exact link but a redirect from SendGrid to the one in the email
Must be one of the links that SendGrid injects to know when an email is opened… Normally that is able to be disabled but if you’re using free Bubble email that won’t be possible
Bubble’s email actions use SendGrid, but if you don’t make your own SendGrid account and provide your API key in yoru app then it uses Bubble’s shared free emails just meant for testing: