Typically, we’re unable to assist for an IP block outside of our control, as the IP block occurs with the marketing service. Could you reach out to the email marketing service and explain the issue? Be sure to ask that they unblock vercel.com , vercel.app , and 76.76.21.21.
Yes, I already saw that post, but I don’t know how it is relevant to my situation.
I don’t have any issues accessing Vercel. But the IP 76.76.21.21, which belongs to Vercerl, is blacklisted. Therefore, links to my website are marked as spam.
On that post you are referring to, all the solutions are for the end user, but I’m not the end user, my customers are, and I can’t tell them to use a VPN or the other fixes.
I’m writing here because your website is blacklisted and the only one who can fix that blacklisted is you.