Subscribe to boards feature for MyBoard

MyBoard allows users to subscribe to boards to receive notifications and updates about the board's content. This can be useful for staying informed about new and updated content on the board, as well as engaging with others who are interested in the same topics.

Users and non-users on MyBoard can subscribe to boards that they are interested in. When a user subscribes to a board, they will receive notifications about new and updated content on the board, such as new cards or comments. These notifications can be accessed through the user's MyBoard account or through email, depending on the user's preferences.

Non-users can also subscribe to boards on MyBoard by providing their email address. This allows them to receive notifications and updates about the board's content without creating a MyBoard account.