Make a social share - shoutout: for a masterclass for a project management tool

I am looking for a person that can do a shoutout for a masterclass, target group will be: developers, web agencies and freelance programmers. The title of the masterclass is: How to make your digital web agency more profitable, they will be sent to an url where they will needs to sign up to a mailing list to receive the url of the masterclass, we need between 5k - 10k of subscribers. We are NOT looking for shout out on fake social media accounts!