The member organisation's Branding Inside Out advises charities on how best to handle branding and comms.
CharityComms chairman Joe Saxton said: 'Comms is increasingly important and the danger is that charities are left silent, as vital messages don't get heard.
'The idea of the brand is always an important one, and it has to remain a priority because in today's world, reputations are built and destroyed very quickly.'
Among its recommendations, the guide suggests that charities would benefit from an association with the 'positive, sociable and fun', which can be reinforced through experiential activities.
The advice comes as charities continue to face a tough market, with many experiencing a flatlining in fundraising. This summer, PRWeek revealed that Cancer Research UK was the latest charity to give its brand and comms a makeover, as part of efforts to draw in donations.