We recently use Amplitude for tracking the event when users verify their emails. So we add the tracking event method inside the Email Template from Auth0. Those are HTML code and I use fetch to handle the event tracking and it works normally when I run it locally. But when the email is sent to Outlook or Gmail account, I got the error as the image below.
I wonder if you can do some configurations on your end about it or what should I do? Thanks so much in advance for your help.
I will reply as soon as possible.