Hi @cordy, you can send your personal contact information including email address if you use a private message to a member. The Get Started on Connect users guide explains how to send a private message to a member here:

-- https://connect.mayoclinic.org/get-started-on-connect/#send-private-message

The reason it's not allowed in a normal discussion post is to protect members privacy and security. When your email address appears in a discussion post it can open you up to spamming from outside sources. You can access the Get Started on Connect user guide from any Connect page by going to the bottom of the page and clicking the link under Mayo Clinic Connect column at the left side.