What you'll achieve
Customers receive an approved reply in the same private thread while public comments and stories stay out of your Inbox.
Reply in the private thread

Connect the exact Facebook Page or professional Instagram account to its Brand, Inbox and reply mailbox.
Open the resulting Conversation and reply from DobroDesk while the customer-care window is open. Instagram replies must be customer-initiated and no longer than 1,000 characters.
Send validated JPEG or PNG images through Facebook or Instagram when needed. Public comments, stories and posts remain outside this private-message channel.