Once a project has been created you will see the options to share your project (Uploader Link) with Contributors via a number of social methods in 3 locations:
On the project created success modal (this pops up straight after a project is created)
On the right hand panel on the Setup page
On an empty Uploads page
The options you have are:
Share to Teams - this will create a draft post in Teams that you can choose to share with an individual or channel (you will need to login to your Teams account)
Share to Slack (coming soon)
Share via Email - this will create an draft email for you on your device (you will need an Email app like Mail or Outlook installed)
Share via SMS - this will create a draft text for you on your device (you will need an SMS app like Messages installed)
Share to WhatsApp - this will redirect you to WhatsApp (you will need WhatsApp installed on your device)
Share to Other - click this to upvote or suggest future integrations.
Please note, unless the social channels have been installed on the device you are using to share the project from, they will be blocked.