You can encourage your members to communicate with one another. It is organized into boards and topics. The boards correspond to a category of conversation, and within each board are different topics relevant to that board (category). Once a topic is posted (typically a question), members can then start the discussion and reply to the question (or to other members' replies).
Message boards can be limited to your association executives (board members), limited to project/committee members, or open to all of your general members. Members have the opportunity to opt-in to a given board, such that they will receive emails when new topics or responses are posted within that board.
The Email List Service Manager (sending a message to an email address within your org, which is then relayed to your members) is a convenient way to send messages to your members who have opted in to receive them. Integrated with our Message Board system, you can set up multiple email lists for interest groups and committees within your organization.