Linkedin’s messaging system can be confusing - it has no “inbox”, but it does have an “All Messages” folder (incoming AND sent messages in the same folder). And an “Unread” folder. It only take a few days of running your Growth-X campaign to get the “All Messages” folder very cluttered. So you’ll need to check the “Unread” folder, but notice that any message you go over will become “read” and disappear. In case you have a message you want to easily find later - mark it back as “unread”.
To help solve this issue you can also manage and view leads inside Growth-X under the “Leads” tab. You can filter leads by status, campaign, etc. and you can even search only for the “Hot” leads and then read their responses.