President of Board chooses to block condo association member's emails

The President of our condo association is blocking emails that I send out to our condo association management company and the rest of the Board of Directors. He has also done some work without permits on drains in our garage. I had code come to the property and they said he should have obtained permits and had the city engineer come out. He also said the reasoning behind doing the work in the first place was incorrect, and that the work was not necessary.

I told this to the President and his second in command in an email. The email was blocked by the President, and the second in command responded that I was a trouble maker and that he is not going to answer emails from me. Neither addressed the issues about the code. Further, our management company completely takes orders from the President, does not have good communications with individual condo unit owners, and fails to respond if the questions are too direct.

Should my emails be able to be blocked? If so, is there anything I can do about this?