Whilst, not all social media allow a pre-populated message to be shared, some do and we strongly recommend you set a custom message for your campaign. Referrers will find it easier to share your campaign if a message is already populated as they simply have to hit share.
EarlyParrot supports pre-populating messages for all social media that support it in the Custom Invites step in the campaign wizard. Changing your custom invite message is easy. You have to simply edit your campaign, via the campaign wizard.