Message Length Limitation
Currently there is no obvious limit on message length in CRUST Messaging.
a) Mattermost limits messages to approx 400 words (not sure of the character count for this), the argument being that a longer message should probably be an attached document.
b) It is also perhaps worth thinking about offering a setting in admin console to vary the message length. This could be alongside other settings such as those restricting file size and type.