SendGrid modifies links inside email and they dont redirect to correct page

Question

I have a rails app running in production with sengrid. At one point in my app I am sending an email with a confirmation link which redirects to a specific confirmation page :

%a.button.button-custom.button-blue{href: confirm_votes_path(@vote.confirmation_token, only_path: false)

However in production, Sengrid seems to modify the link inside my mails. I get something like :

href="https://u3881616.ct.sendgrid.net/wf/click?upn=pVistOUxWTXmIPFqqAw0AnJt-2BbCLbreZ3xbCIcCjU0qXsxlkph8Wd3VafON-2FVyJfT0PWClbesX-2F2oOjnxeXwwaDA80aCKixoULvRGUX7PgDg59Vde4HU6spxlzuqyUUF_e4qGN2gUHpERWs59wU8LHyeuQCdWWdC4Yjpw10HvUcUonj0ZfIp-2FiYACT83qOqsHMBnkJGcBsjpIoSUjVySxVhEtqCz7myXFB-2B7uTWKruQbH-2BG7-2FI2-2BFdmXC6nbf-2FFpgyNUivvir0Upib8e5r8YJY3caF-2BpKD-2FscuINwBQkM7n008mEGADo5w5w5fejlzhopGHvJegbSRePJ-2BBu3b3olUhP2q-2BX4lyJAYvegG4xnDPU-3D"

and the link redirects to the base url of my website and not the good confirmation url like it does locally.

What is going on with SendGrid here

Answer 1

You need to disable click tracking.

Answer 2

What should the final URL look like? SendGrid is click-tracking, like bwest said, but that will still work with tokens in the URL and such. SendGrid does the substitution-variable replacement first, then tracks the resulting URL.