I have a question.

I see value in writers on Medium working in unison on exploring ideas of their interest. For example, immigration is now a hot political subject. Almost everyone has an opinion or at least some observations. By sharing them in one place, we can become more knowledgeable and can contribute to resolving this nationwide problem. I did my homework on this issue and have strong opinions. We created a publication dedicated to political debates, https://virtualagora.us/. What is the best way to invite other writers to participate in a conversation? Some time ago, there was a way to send a personal message. Now, I do not see it.