Check out this SendGrid account phishing message I received today.
The email claims that SendGrid will be adding a 'Support ICE' link to every email sent via their platform.
Of course 99.99% of orgs would want to opt-out if it were real, so this is an incredible lure to get SendGrid creds.
Also, if the bad guys are using opting out of supporting your organization as a lure, you know you done fucked up.