Adding or Removing Your Email from Do Not Contact List
How can I get my email address added or removed from the “Do Not Contact” list?
You can send Customer Service a request to add your email address [to Linkedin’s] “Do Not Contact” list. Email addresses on this list:
Are fully blocked within the system and cannot be used as a contact email address for a LinkedIn account.
Can be removed from the list if you later want to use the email address on your account.
~Linkedin Help Center